Wiring Archives - Page 10 of 16

Foot Operated

September 30, 2016/in Wiring /by admin

Customers ask us to help do some unique things electrically in their cars. In most cases, we’re helping their classic car do something that their new car does. We were just asked how to get a foot operated trunk release mechanism. This is a pretty cool request. Everyone has seen the commercials for cars that let you open a trunk or tail gate with only your foot. You wave it under the bumper and the door magically opens.

On one hand, this is pretty simple. You can get a sensor, wire it to your existing wiring harness and get your trunk to pop when you waive your foot under the rear bumper. However, there are a few safety and security concerns that you need to consider. Our Infinitybox system makes managing this really easy.

Before we get to safety and security, let’s talk about sensors. You need some sensor that is going to detect the presence of your foot being waved under the bumper. There are really two different kinds of sensors to use: ultrasonic and infrared. For all intents and purposes, infrared sensors are more cost effective and easier to use in these applications.

The advent of the hacker movement has brought tons of cost effective infrared sensors to the market. You need to find one that is environmentally sealed considering that it will be mounted outside of your car. You also need one that has an adjustable range so that you can set it correctly. This picture shows an example of an infrared sensor found on Amazon. These work by emitting an infrared signal and measuring the amount of light that is reflected back by an object in front of the sensor. You can adjust its sensitivity to get the right range.

Picture of an IR sensor that can be used to sense distances

You need to choose your sensor based on the distance between the underside of your bumper and ground. The sensor above has an adjustable range of 3 to 15 inches. You also want to make sure that the sensor can operate in the 12 to 16-volt DC range. Lastly, you want a 3-wire sensor. This illustration shows typical wiring for these sensors.

Schematic of simple IR sensor used to detect objects

You connect the black wire to ground. You need to get battery voltage to the red wire. The yellow wire is going to connect to an input on your MASTERCELL.

For battery voltage, we recommend powering this off an output on your rear POWERCELL that is on when security is disabled. That way the sensor only has power when you turn off security from inLINK. This will help to reduce the drain on the battery.

The yellow wire is going to a MASTERCELL input to trigger the trunk popper. You have to make sure that the sensor grounds the yellow wire when it is triggered. In most cases, this is called an open collector. Check the literature that came with the sensor or test it with a power supply and a multi meter.

You are going to have to set the range of the sensor to work properly with your car and your bumper. The sensor should be pointing down towards the ground in an area under the bumper that you can easily access with your foot. The sensor will have a screw on it that will allow you to set the sensing distance.

Here’s where our Infinitybox system makes this really easy. There are a few things that you need to consider with a foot operated trunk popper. First, you don’t want the trunk popping randomly as you drive down the road and go over an object. Also, you don’t want anyone else to be able to come up to your car to pop the trunk with their foot if security is enabled.

To handle these two issues, we can program your system so that the trunk popper can only work then the car is in park and when security is disabled.

Here’s how this would work. As you approaching your car, you press the button on your inLINK key fob to disable security. This is going to activate the sensor on the back. If the car is in park, the trunk will pop when you wave your foot under the rear bumper.

You can do the same thing with other doors. You can also do the same thing to control inMOTION outputs to drive a linear actuator to actually raise the trunk when you waive your foot under the rear of the car. This is just a simple example of some of the powerful things that you can do with your car wired with our Infinitybox system.

Click on this link to contact one of our technical support team members to get more details on foot activated trunk poppers or any other option with our Infinitybox system.

S2000

September 28, 2016/1 Comment/in Wiring /by admin

One of the greatest parts of our Infinitybox system is the flexibility of the MASTERCELL inputs. You can use practically any switch in your car. If you want to keep the original OEM switches that came in your car, you can do that. If you want to add new billet switches, you can do that. A lot of our customers like to take switches out of new cars and put them in their classic cars. One of the most popular is taking the Engine Start button from a Honda S2000 and using that to start their engine in their resto-mod, kit car or Pro-Touring build.

Our MASTERCELL inputs trigger POWERCELL outputs when they are connected to ground. This makes wiring switches very easy. Also, it takes very little current to turn on a MASTERCELL input. That means that you can use practically any switch to trigger an input. Click on this link to go to an earlier blog post that talks in more detail about how our MASTERCELL inputs work.

A lot of our customers use the Engine Start button from the Honda S2000. This is a slick looking, big red button with a nice chrome bezel around it. It easily fits in any dash panel. Some of our customers use this as their starter button. They have a separate key switch that turns on their ignition. To start the car, they press and hold the Engine Start button to crank the starter. In other cases, our customers are using this same button with our 1-button start feature. From one button, you press and hold it to turn on the ignition then crank the starter. Click on this link to see an older blog post that talks about hour one one-button start works.

When you pair our 1-button start with our inLINK security features, you can do something pretty cool in the car. Most of our customers who are building Factory Five Roadsters and Hot Rods are using our one button start with a single button on the dash. When they enable security from their inLINK key fob, this completely blocks the ability to start the engine, which is important with an open-top car. As they approach the car, they disable security from inLINK, hop in and press the button on the dash to start the engine.

Wiring the S2000 switch is pretty easy. This picture shows you how to connect the MASTERCELL inputs and ground to the terminals on the back of the switch. You can either use the starter input or the 1-button start input.

Image of wiring details for Honda S2000 Engine Start Button to work with the Infinitybox wiring system.

The Honda S2000 switch also has a light bulb in it. With a simple modification, you can use this to light the switch. Some of our customers will wire it so that the switch lights up when the dash lights are on. Others will wire it so that it is lit when the ignition is on. This picture shows how to modify the printed circuit board inside the switch so that you can use the built-in illumination.

Image of modifications to Honda S2000 Engine Start button for Illumination

This is just an example of how flexible our Infinitybox system can be. You can download a PDF of the S2000 switch wiring by clicking on this link. You can download a PDF showing how to modify the switch to use the illumination by clicking this link.

Please feel free to contact our technical support team with questions on wiring your vehicle with our Infinitybox system.

Central Locking

September 27, 2016/in Wiring /by admin

We created our inMOTION cell about 6 years ago to handle things that need to change direction. From any MASTERCELL input, you can control power windows, lock actuators, exhaust cut-outs and other linear actuators. What makes inMOTION unique is the fact that it changes polarity from within the cell. This means that you don’t need special relays to change the polarity of the current flowing to your window motors or lock actuators. inMOTION does that for you. You can also control any of the inMOTION outputs from our inLINK key fobs and any smart device through inTOUCH NET. This post is going to show you how to wire lock actuators with Central Locking to the MASTERCELL and inMOTION cell.

There are lots of ways to control door lock actuators. In most cases, our customers want to unlock their doors when they disable security from their inLINK key fobs. That’s easy. From the inside of the car, they usually want switches that lock and unlock the doors. That’s easy. Another way to handle this is to use the central locking feature built into the MES 5-Wire Door Lock Actuator. Our good friends at Electric-Life sell these. You can see them at this link.

These lock actuators do two things. First, they lock and unlock the doors. That’s pretty basic. They also have switches built into them to control central locking. When you pull up on the door lock knob, it pulls on the lock actuator mechanism and closes a switch internally. This switch sends a signal to the Infinitybox MASTERCELL to pulse the lock output on inMOTION to unlock the rest of the doors. Pushing down on this same door lock knob closes another switch inside the actuator that closes a second switch. This second switch is connected to another MASTERCELL input that sends a signal to inMOTION to lock the doors. Take a look at this wiring diagram.

Image of Infinitybox wiring diagram showing how to wire 5-wire lock actuators

There are a few things to consider when using these lock actuators.

Check the wiring diagrams that come with the actuators to confirm the wire colors in our drawing.
Depending on how you have the actuators oriented in the car, you may have to change the wiring for the inMOTION outputs and the central locking switches. You want the up and down directions to be the same on all actuators and you want the lock switches all in the same direction. Check to make sure everything is working correctly before you finalize you wiring connections.
You must properly adjust the linkage for the lock mechanism so that you can get full range on the actuator plungers when you pull up and push down on the lock knob.
Make sure that you train the inMOTION cell correctly. Follow the instructions that came with your inMOTION kit.

You can download a PDF of this wiring diagram by clicking this link.

Click here to contact our technical support team with any questions about wiring central locking with our Infinitybox system.

Picture of the Vintage Air Control Screen on Infinitybox inTOUCH NET

DNN992 Settings

August 11, 2016/in Wiring /by admin

Infinitybox has been introducing break-through automotive wiring products since 2007. Our inTOUCH NET is one of our customers’ favorites. Adding inTOUCH NET to your system gives you smart phone and touch screen control of any electrical function on your car wired with our Infinitybox wiring system. This includes iPhones, iPads, Galaxy phones and tablets, Android tablets, Windows Surfaces and many more. We also worked with the team at Kenwood to connect their Excelon series of head units to our inTOUCH NET. Their flagship, the DNN992 is the most popular head unit used. Some customers have questions about the DNN992 settings to properly display the inTOUCH NET screens. This post is going to cover that.

You need to set up the display settings on the DNN992 to properly display the inTOUCH NET screens. Follow the instructions that came with your inTOUCH NET to connect it to the DNN992. Then follow these simple steps for the display settings.

Enter the browser on the DNN992.
Press the Menu button and select Settings.
Select the Advanced tab and scroll down to the bottom.
Set the Default Zoom Setting to Far.
Use the Back button to get to the settings main page.
Select Labs.
Select the option for Fullscreen.
Exit back to the main screen for the DNN992.

Please click here to contact our technical support team if you have questions on the DNN992 settings or anything else related to our Infinitybox wiring system.

Image of Infinitybox diagram showing how to wire the General Motors LS3 ECU with the 20-Circuit Kit

LS3

July 15, 2016/1 Comment/in Wiring /by admin

GM created something amazing when they introduced their E-Rod crate engine package. You get the same LS3 powerplant found in the new Camaro and Corvette. You can drop that into anything that you’re building and get an emissions compliant engine package.

When you buy the E-Rod, you get the option to buy the engine harness for the LS3 direct from GM. Alternately, you can go with ECUs and engine harnesses from many other manufacturers. This post is going to talk about how you connect your GM LS3 engine harness to your Infinitybox 10 or 20-Circuit wiring harnesses.

Before you go anywhere, you must thoroughly read and understand the literature that came from General Motors about your LS3 engine and the wiring harness. This link will take you to the engine control harness literature from GM.

Another important note, this post is only going to talk about connecting the engine harness to the Infinitybox system. This is going to include the main battery power, the ignition power, the fuel pump trigger and the cooling fan trigger. Read the GM literature for all of the other electrical connections to the engine.

The first connection that must be made is the primary battery power to the fuse box in the engine harness. GM recommends an 8-AWG cable running directly from the battery to the main battery connection on the fuse box. This is a bolted connection on the side of the box. See the GM literature for proper fusing of this power feed.

There are three ground connections that must be made on the engine harness. See the GM literature for more specifics on properly connecting these grounds.

Next, you need to connect ignition power from your POWERCELL to the engine harness. See the configuration sheet that came with your Infinitybox system for the correct wire color for your ignition output. This will connect to the pink wire in the engine harness. When your MASTERCELL input for the ignition is triggered, you will have battery power on the POWERCELL output, which will power the ECU.

Next, you need to connect the fuel pump output from the engine harness to your MASTERCELL input. The GM engine harness puts out a 12-volt signal for the fuel pump trigger. This must inverted to a ground signal to properly connect to the MASTERCELL. You can use one of our inVERT Minis to invert this signal. This link will take you to more information on the inVERT Mini. You can also use a relay to invert this signal. Different versions of the LS3 engine harness have different colors for the fuel pump wire. See the GM literature that came with your engine for more details.

Lastly, you need to connect the cooling fan output from the engine harness to your MASTERCELL input. Just like the fuel pump, the GM engine harness puts out a 12-volt signal for the cooling fan. Follow the instructions for the fuel pump to properly invert this signal to the MASTERCELL. Just like the fuel pump, different versions of the LS3 engine harness have different colors for the cooling fan wire. See the GM literature that came with your engine for more details.

This diagram shows the details of the connections between your Infinitybox system and the LS3 engine harness.

Image of Infinitybox diagram showing how to wire the General Motors LS3 ECU with the 20-Circuit Kit

You can download a PDF version of this wiring diagram by clicking this link.

Here’s how the whole thing works. When you turn on your ignition, the MASTERCELL tells the POWERCELL to turn on the ignition output. This powers up the engine harness and the ECU. The ECU will send a signal to the MASTERCELL when it wants the fuel pump to run. The MASTERCELL will send a signal to the POWERCELL in the rear of the car to provide power to the fuel pump. When the engine is running, the ECU will send a signal to the MASTERCELL when it is at temperature and the cooling fan should turn on. The MASTERCELL sends a command to the front POWERCELL to power the fan. When the engine temperature drops below the set point in the ECU, it will turn off the input to the MASTERCELL. The MASTERCELL will send a command to the POWERCELL to turn off the cooling fans.

Let us know if you have questions about connecting your E-Rod LS3 engine harness to your Infinitybox system. Click on this link to get connected to a member of our technical support team.

Speartech LS-58X

July 12, 2016/in Wiring /by admin

Our Infinitybox wiring system can interface with practically every engine management system in the aftermarket. This post is going to show you how to connect your 10 or 20-Circuit Kit to the Speartech LS-58X engine harness. LS swaps are one of the most popular transplants in resto-mods, street rods and Pro-Touring builds. Connecting your Infinitybox system to the Speartech LS-58X harness is pretty straight forward.

We get a lot of questions about how our Infinitybox wiring system connects to the ECU. We don’t control the engine. That is what the ECU does. We power the ECU. We can also take commands from the ECU to control external functions like the cooling fan and fuel pump.

In the case of the Speartech LS-58X engine harness, your Infinitybox system is going to provide the switched key-on ignition power. It will also take the triggers for the cooling fan and the fuel pump from the ECU. That way you can use the Infinitybox system to eliminate the need for external relays for your fuel pump and cooling fans.

Before you get any further, please read and understand the manual that came with your Speartech LS-58X harness. This link will take you to the wiring details from Speartech. Also, make sure you are familiar with your Infinitybox system.

In this post, we are only going to discuss connecting battery power, ignition power and the triggers for the cooling fan and fuel pump. Follow the Speartech instructions for the rest of the connections to your ECU and engine.

To begin, you have to connect the Orange wire in the Speartech harness directly to your battery. Follow their instructions for proper connections and proper fuse sizes to protect this wire.

Next, you need to connect the ignition output from your POWERCELL to the Pink wire in the Speartech LS-58X harness. This is ignition power from the POWERCELL. When you turn the key to the ignition position, you will get battery voltage to the ECU.

Next, connect the Grey Fuel Pump + wire from the Speartech harness to the MASTERCELL. This is a positive trigger for the fuel pump so it must be inverted to a ground signal to connect to the MASTERCELL input. You can use one of our inVERT Minis to do this. Alternately, you can use a relay to invert this signal. Click on this link to learn how to use a relay to do this. You must not connect the MASTERCELL input directly to the Fuel Pump Trigger from the Speartech harness. This will damage your MASTERCELL input and void the warranty. Check your configuration sheet for the exact wire colors for your fuel pump trigger.

Last, you need to connect your cooling fan trigger from the MASTERCELL to the Speartech harness. Check your configuration sheet for the wire colors for your cooling fan input. The Speartech ECU ground triggers the cooling fan outputs. That means that you can connect the MASTERCELL input wire directly to the Speartech harness. The primary cooling trigger from Speartech is the Dark Green wire in their harness.

We strongly recommend soldering a 1N4001 diode in between the MASTERCELL input wire and the EFI system trigger wire for the cooling fan. This isolates the MASTERCELL from the EFI system. Diodes are directional parts so you must wire them with the cathode side facing towards the ECU. That is the side of the diode that has the stripe on it.

The Speartech LS-58X harness has provisions to control two cooling fans. You can use any OPEN POWERCELL output on your system to control your second cooling fan with the Speartech harness. Wire the Dark Green wire from the Speartech harness, through the diode as described above, to the MASTERCELL input wire for your second cooling fan. This way, the Speartech harness will control your primary and secondary cooling fans through your Infinitybox system without having to add relays.

This picture shows the details of wiring the Infinitybox System to the Speartech LS-58X Engine Harness. Please note that Infinitybox wire colors may vary based on different configurations. See the configuration sheet that came with your kit for the specific wire colors.

Picture of the Infinitybox wiring diagram showing how to wire the Spear LS-58X Engine Harness

You can download a PDF version of this wiring diagram by clicking this link.

Click this link to contact our team with any questions about wiring your car or truck with our Infinitybox system.

Image of wiring diagram showing how to wire the Ford Coyote ECU with the Infinitybox 20-Circuit Kit

Fuel Pump Trigger

July 11, 2016/in Wiring /by admin

Let’s talk about fuel pump triggers. In a previous post, we talked about wiring the fuel pump to the POWERCELL output. In this post, we’re going to talk about how to connect the MASTERCELL input to the fuel pump trigger. We’re getting towards the end of our customer’s install of our 20-Circuit Kit into their 1967 Mustang. In previous posts, we’ve shown how to mount the MASTERCELL, POWERCELL and primary fuses. We’ve shown how to run the primary power cables and the CAN cable that connects the cells together. We’ve gone step-by-step through the process of connecting the POWERCELL outputs to the lights, fans, ECU, starter solenoid, fuel pump and other switched loads. We’ve shown how to connect your MASTERCELL inputs to the different switches in the car.

It’s time to wire the fuel pump trigger. Remember how the Infinitybox system works, your loads (lights, fans, pumps, ECU, starter solenoid and other switched functions) get their switched power from the POWERCELLs. You place the POWERCELLs locally in the car where you need them. You connect your switches to the MASTERCELL, which is usually under the dash. The MASTERCELL connects to the POWERCELLs through a thin data cable. When you turn on a switch, the MASTERCELL sends a command to one of the POWERCELLs to turn on an output.

In the case of the fuel pump, there is a dedicated output on the rear POWERCELL. In the case of this 1967 Mustang Kit, this is the tan wire on the POWERCELL A output harness. That is output 10. The input wire to the MASTERCELL is number 19. This is the tan wire with the yellow tracer wire on the MASTERCELL B input harness. Check your configuration sheet for the specifics on the POWERCELL output wire and the MASTERCELL input wire.

When you ground the MASTERCELL input wire for the fuel pump, the MASTERCELL sends a command to the rear POWERCELL to turn on 12-volts on output 10. This provides the switched battery power to the fuel pump. When you disconnect the MASTERCELL input wire from ground, the POWERCELL turns off the output for the fuel pump.

Our customers have many different ways that they want to control their fuel pump. The easiest is to trigger it with the ignition switch. To do this, simply connect the fuel pump input wire to the ignition terminal on the key switch. This wire is would be wired to the same terminal as the MASTERCELL input for ignition. When the key is in the run position, the inputs for both the ignition and fuel pump would be connected to ground. The MASTERCELL would tell the front POWERCELL to turn on the ignition output and tell the rear POWERCELL to turn on the fuel pump output.

Another way to do this is to have a separate switch for the fuel pump. Most race cars have this. A lot of guys will wire their cars this way because it is easier to work on the car plus it gets you an extra level of security. Unless you know to flip the fuel pump switch, the car won’t start. You’d wire a separate fuel pump switch no differently than any other switch to the MASTERCELL. The MASTERCELL input wire would connect to a normally open terminal on the switch. The other side of the switch would connect to ground. Turning on the switch connects the MASTERCELL input to ground, which turns on the fuel pump output on the rear POWERCELL.

Another option for controlling your fuel pump is to connect the MASTERCELL input to your ECU. Most engine management and EFI systems have an output that triggers the fuel pump. You can connect this wire from the EFI system to the MASTERCELL to have the ECU tell the Infinitybox system when the pump should be on or off.

There is an important warning that you must watch here. Remember that the MASTERCELL inputs are designed to be connected to ground. Applying battery voltage to the inputs may damage them and void the warranty. Carefully read the manual that came with your EFI system to understand how their fuel pump trigger is set up. They will usually be identified as either a positive or negative trigger.

If the fuel pump trigger is negative, you can connect that to the MASTERCELL input wire. We strongly recommend soldering a 1N4001 diode in between the MASTERCELL input wire and the EFI system trigger wire for the fuel pump. This isolates the MASTERCELL from the EFI system. Diodes are directional parts so you must wire them with the cathode side facing towards the ECU. That is the side of the diode that has the stripe on it. This picture shows an example of the FAST EZ-EFI system and how to wire the diode into the fuel pump trigger.

Picture of wiring diagram showing how to wire the FAST EZ-EFI fuel injection system with the Infinitybox system.

If your EFI system has a positive trigger for the fuel pump, you must convert this positive signal to a negative signal. The easiest way to do this is to use one of our inVERT Mini’s. This is a small converter that is loomed in the harness. It so small, you hardly notice that it is there. This link will take you to more information on the inVERT Mini. Another option to flip the fuel pump trigger to a ground trigger is to use a relay. This link will take you to a diagram showing how to use a typical automotive relay to flip a positive trigger to a negative trigger.

In the case of our customer’s 1967 Mustang, they are using the Ford Coyote crate engine. That has a positive fuel pump trigger. They chose to use an inVERT Mini to flip the positive signal from the ECU to a ground trigger to the MASTERCELL. This picture shows the wiring diagram for the Coyote ECU and how the inVERT Mini is wired into the harness.

Image of wiring diagram showing how to wire the Ford Coyote ECU with the Infinitybox 20-Circuit Kit

You can download a PDF of this Coyote wiring diagram by clicking this link.

Click on this link to contact our team with any questions about wiring your car with our Infinitybox system.

Example of a typical radiator temperature switch

Cooling Fan Switch

July 6, 2016/1 Comment/in Wiring /by admin

The next step in our 1967 Mustang wiring process is to wire the cooling fan switch. There are a few different ways to do this depending on how you have your car set up. In a previous post, we talked about wiring the cooling fans to the POWERCELL output. This link will take you to that post. In this post, we are going to talk about wiring the MASTERCELL input wire to trigger the fans.

Remember how our system works. The switches connect to the MASTERCELL. The loads connect to the POWERCELL. There is never a direct connection between the switch and the thing that you are switching. All of that is controlled inside the Infinitybox system.

The most common way to wire the cooling fan switch is to use a temperature switch. This is usually threaded into the radiator. When the coolant temperature exceeds a set point, the switch triggers the cooling fans.

Inside the temperature switch, there is a bi-metal switch that is set for a specific temperature. Typical temperature set points are 180 F, 185 F and 190 F. When the coolant temperature hits this point, the bi-metal element in the switch flips. There are two main different types of temperature switches. The most common has a single terminal on it. This picture shows a common 1-terminal temperature switch.

Example of a typical radiator temperature switch

If you have this type of switch, you are going to connect your MASTERCELL input wire to the quick-disconnect terminal on the switch. The switch grounds to the chassis through its metal body. When the temperature exceeds its set point, the switch closes internally which connects the quick-disconnect terminal to ground. This triggers the MASTERCELL input, which sends a command to the front POWERCELL to turn on the cooling fan output. When the coolant temperature drops below the set point, the switch opens internally. This disconnects the MASTERCELL input from ground. The MASTERCELL sees this change and sends a command to the front POWERCELL to turn off the cooling fan output.

Other temperature switches have two terminals. This picture shows a good example.

Example of a two-terminal temperature switch

In this case, both of the terminals are isolated from the metal body of the switch. You connect your MASTERCELL input to one of the terminals and connect the other terminal to ground. There is no polarity to this switch so you can use either terminal for the MASTERCELL input connection. Outside of that, this switch works the same way as the single terminal switch. When the coolant temperature exceeds its set point, the switch closes internally which electrically connects the two terminals together. This connects the MASTERCELL input to ground.

This picture shows you generically how to wire a temperature switch to your MASTERCELL input.

Image of wiring diagram showing how to wire a thermostatic cooling fan switch to the Infinitybox MASTERCELL

Here is an important note about temperature switches and temperature senders. There is a big difference between them. The temperature switch turns on and off at a set temperature. The temperature sender is what controls your temperature gauge. You cannot connect your cooling fan input from the MASTERCELL to your temperature sender.

You can also use your ECU to trigger your cooling fan input if it has that capability. The important thing to understand is whether the ECU trigger is a ground trigger or a positive trigger. The manual for the ECU will get you more information. You need to wire these differently if they are ground or positive triggers. This picture will show you how to wire these two different types of triggers.

Image of wiring diagram showing how to wire the cooling fan trigger from an ECU to the Infinitybox MASTERCELL

If the ECU has a ground trigger for the cooling fan, we recommend installing a diode to buffer the MASTERCELL from the ECU. If it is a positive trigger, you must use a relay or an inVERT Mini to flip the signal to a ground trigger. See the picture above for more details.

Our customer is using the Ford Coyote crate engine in this 1967 Mustang. The Ford ECU has a temperature sender that measures the coolant temperature. Based on this temperature, the ECU has an output that is designed to trigger a cooling fan. We have a dedicated wiring diagram on our website that shows you exactly how to wire the cooling fan trigger to the Coyote ECU. You can download the wiring diagram for the Coyote ECU by clicking this link. The Coyote ECU has a positive cooling fan trigger. You must use an inVERT Mini to flip this signal. The wiring diagram shows you how to do that.

The resources section of our website has wiring diagrams for many different ECUs. These will show you how to wire the cooling fan trigger from the ECU to your MASTERCELL.

Click on this link to contact our team with any questions about wiring your cooling fan switch.

Rear LED tail lights on a 1967 Mustang Restomod wired with the Infinitybox system

Back-Up Lights

July 5, 2016/in Wiring /by admin

The back-up lights are the next thing to wire in our customer’s 1967 Mustang project. We’re getting to the end of the switches that we need to wire to the MASTERCELL.

If you look at your configuration sheet, you will not see a dedicated output for back-up lights. Depending on the vintage of the car and the manufacturer, there may or may not be back-up lights on the car. We don’t dedicate an output to this but you can use any of the OPEN outputs on your rear POWERCELL.

This link will take you to the configuration sheet for the system that we are installing in this 1967 Mustang. This link will take you to our previous post in this series going through the details of the configuration sheet. You will see that there are several outputs that are labeled as OPEN on the configuration sheet. Depending on the version, you may have 4 to 6 OPEN outputs. OPEN means that there is no specific function assigned to the output. These can be used as generic outputs. You will note that the personality for these outputs is TRACK. That means that the output will track the switch. When the switch is on, the output is on. When the switch is off, the output is off. You can use OPEN outputs for things like amp triggers, extra lights, transmission cooler fans, secondary fuel pumps and back-up lights.

Output 5 on the rear POWERCELL is OPEN. This is the white wire coming from the B harness. The MASTERCELL input is the white wire with the red wire. This is input 2 on the MASTERCELL A input harness.

We previously connected the white wire from the rear POWERCELL to the back-up lights in the rear of the car. The customer is using the tail light assembly from Mustang Projects. You can read about that in this blog post. The white wire connects to the tail light assembly. Then the assembly needs to get connected to ground. Follow the instructions that came with your back-up lights for the exact wire colors.

Next, the MASTERCELL input wire needs to connect to a switch that closes when the transmission is in the reverse position. Our customer is using a Ford AOD transmission in this car. There is a dedicated connector on the driver’s side of the transmission. We connected to this connector in a previous post for the neutral-safety signal. We are going to connect to the same connector for the reverse signal.

Sketch of the Reverse/Neutral Safety Switch Connector on a Ford AOD Transmission

This diagram will show you which terminals on the Ford AOD transmission you need to connect to ground and to the MASTERCELL input harness.

Wiring diagram for Reverse/Neutral Safety switch on Ford AOD transmission

Terminal 1 on the transmission connector needs to get connected to ground. Terminal 2 needs to connect to the MASTERCELL input for the back-up lights. In our case, this is the white wire with the red tracer on the MASTERCELL A input harness. This link will take you to a PDF of this document.

When the transmission is in the reverse position, the switch makes a connection between terminals 1 and 2. This connects the MASTERCELL input to ground. When the MASTERCELL sees the input connect to ground, it sends a signal to the POWERCELL in the rear of the car to turn on the output that we have chosen for the back-up lights. When the transmission is taken out of reverse, the switch opens which disconnects the MASTERCELL input from ground. The MASTERCELL sees this change and sends a command to the POWERCELL to turn off the output that we have chosen for the back-up lights.

Most transmissions will have a set of contacts for a reverse switch. In other cases, there will be a switch in the shifter that will be made when the transmission is in the reverse position. Check the literature that came with your transmission or your shifter.

That’s it. Having a POWERCELL in the rear of the car makes wiring the back-up lights very easy. There is no extra wire to run to the back of the car. You are already using the existing POWERCELL to manage this.

Please contact our team with any questions about wiring with our Infinitybox system. You can contact a member of our technical support team by clicking this link.

Neutral Safety

July 1, 2016/2 Comments/in Wiring /by admin

A lot of people have seen a video from one of our customers starting his car remotely with an iPad. His iPad is connected to the inTOUCH NET module in his car. This lets him control everything including lights, windows, heat & A/C and locks. It also lets him start the car. Starting a car remotely can be very dangerous. If the car is started with the transmission in gear, it can launch the car forward potentially injuring, maiming or killing someone. In our Infinitybox system, there is a neutral safety switch input that must be wired before the engine will start. This is true for starting it with a keyed switch, our one-button start or remotely from inTOUCH NET.

Some people call these park-safety switches, clutch interlock switches or neutral safety switches. Regardless of what you call them, they are used to detect if it is safe to turn the starter. They either detect that the transmission is in park, the transmission is in neutral, the clutch pedal is depressed or your foot is on the brake. This is a standard input on all of our systems that must be wired correctly for the starter output to turn on.

The neutral safety input works like any other MASTERCELL input. It must be connected to ground to work. When you try to start the car, the MASTERCELL checks the state of the neutral safety input. If it is not grounded, the MASTERCELL will not let the POWERCELL turn on the starter output. The MASTERCELL must also see the neutral safety input change periodically. If the input is tied directly to ground or if the switch fails, it will not let the starter crank.

All safety switches essentially work the same way. If there is continuity through the switch then it is safe to start the engine. Most transmissions have switches built into them that close when it is in neutral or park. That is the case for our customer’s 1967 Mustang. They are using a Ford AOD transmission with the built in switch. In other cases, you may have a switch on your clutch pedal. When you press the clutch, this closes the switch. You wire the MASTERCELL input to one side of the switch and ground the other side. You can also have a switch built into your shifter. This switch is closed when the selector is in the park or neutral position.

If your car has none of the options above, you can wire your neutral safety input from the MASTERCELL to the brake pedal switch in parallel with your brake light input. When you step on the pedal, the MASTERCELL will see both the brake light input and the neutral safety input. The brake lights will turn on and the MASTERCELL will allow the starter to crank. You simply connect both MASTERCELL inputs to the same terminal on the brake pedal switch. This diagram will show you how to do this.

Image of wiring diagram showing how to use your brake pedal as a neutral safety switch

Going back to the Ford AOD transmission, there is a connector on the transmission for both the neutral safety and the reverse lights. We’ll talk about reverse lights in an upcoming post. This picture shows how to wire the MASTERCELL input for the neutral safety to the connector on the transmission.

Wiring diagram for Reverse/Neutral Safety switch on Ford AOD transmission

The neutral safety input from the MASTERCELL will connect to Terminal 2 on the connector. Terminal 1 will connect to ground. See our warnings in previous posts about good ground connections. When the transmission is in park or neutral, the switch closes. This connects the MASTERCELL input to ground. You can download a PDF of this wiring diagram by clicking this link.

Starting issues related to the neutral safety switch are probably our number 1 technical support call. Most guys just don’t read this in the manual. Your call will not start unless you have this MASTERCELL input wired properly. Please click on this link to contact our technical support team with questions.