Wiring Archives - Page 15 of 16

CAN Cable

August 18, 2015/in Wiring /by admin

The CAN cable is the main backbone of the Infinitybox Multiplex System. It takes the commands from the MASTERCELL and routes them to the peripheral cells, like POWERCELLs and inMOTION cells, in a system. We get a lot of questions about this cable and how to work with it so we put this post together to answer these questions.

One of the first questions that we get is what does CAN mean? CAN stands for Controller Area Network. This is an automotive standard created to let different electronic systems talk together. It was originally developed by Bosch in 1983 so it’s been around for a while. You can read more about CAN at this link.

There area many different CAN protocols. When a company says they communicate on CAN, that is the equivalent of saying you speak English. English spoken in the Bronx sounds like someone speaking with a South-Side Chicago accent. Both use the same basic works but one may not completely understand the other because of inflections and local slang. The Infinitybox system uses a proprietary version of CAN 2.0b. We take this standard protocol and all extra data to get more functionality out of the system. We also have versions of our hardware that communicate on J1939, which is the commercial vehicle CAN standard.

Inside our CAN cable, there are two main wire: CAN High and CAN Low. These send the commands between the different cells in an Infinitybox system. Additionally, we run a power and ground wire to provide voltage to the MASTERCELL. The POWERCELLs have the ability to put out voltage through the CAN connector. There is a very important addendum that we include with our 20-Circuit Harness kits that talks about power and ground in the CAN cables. Please check out this link when you’re installing your kit.

A lot of guys ask where they can put their different cells on the 3-way cable that comes with the 20-Circuit Kit. On very long CAN cables, over 30 feet, you need to have the MASTERCELL on one of the cable and the POWERCELL with the terminator resistor on the other end. This has to do with proper impedance matching of the CAN High and CAN Low lines in the cable. For most aftermarket installs, where the CAN cable length is under 30 feet, you can put the MASTERCELL anywhere on the CAN cable.

A lot of guys also ask about the length of the CAN cable. We include a standard CAN cable length in the 10-Circuit and 20-Circuit Harness Kits. This length was derived from a few years of learning from our customers and how they place cells in their cars and trucks. We also have options when you order your kits to build custom CAN cable lengths. You can call our sales team about this. At the same time, there is nothing keeping you from extending or shortening your CAN cable in the system. You can do this a few ways.

The first option is to cut the cable and splice in a new length of wire or cut out a length of wire. There is nothing wrong with this and this is a completely acceptable way to do it. The wire that we use is 22-AWG TXL wire. You can buy this wire from a few sources. We get ours from Waytek Wire and you can buy it in reasonable lengths. This link will take you to the 22-AWG TXL section of their website. The colors that we use in our standard CAN cables are black, green, blue and red.

It is very important that you do not cross the wires in the CAN cable. When you’re reconnecting the connector, make sure that the wires go back where they came from.

If you’re going to splice the cables, we recommend a good butt splice connector and heat shrink. This link will take you to a good 22-AWG butt splice from Waytek. An 1/8″ piece of heat shrink over this will keep it protected and insulated. Here’s a link to heat shrink. The key to a good splice is a good crimp on the butt splice connector. The right tool will guarantee a good job and isn’t very expensive. Here’s a good tool for the crimp.

While a splice is completely acceptable, some guys don’t wan them in their wiring harness. We get that. You can create your own custom cable lengths and crimp the terminal right on the end of your wire to connect into the connector. The connector system used for our CAN cables is very easy to work with and requires no special tools. This picture shows you all of the parts that go into the CAN connector.

Imaging showing the different components of the Infinitybox CAN connector

The yellow part is called the strain relief. It helps to route the wires out of the connector. The green part is the seal. Please note that in some newer systems, the cable seals are black. It makes the connection between the connector and the mating port on the MASTERCELL or POWERCELL water tight. The grey part is called the connector. It holds the terminals from the harness. The last part is the retainer. This is the clear clip on the front end of the connector.

The terminals that are used in this harness are made by Aptiv. Their part number for the terminal is 15435885 and it can be sourced easily from Mouser. This link will take you there. This link will take you to a good quality crimp tool for these terminals.

You can cut your CAN cable to length and crimp the terminals onto the wires. These instructions will show you how to dissemble the connector to plug these terminals into the connector.

First, get a small screw driver and gently pry up on the strain relief clips on the strain relief. This part opens up like a clam shell. Next, remove the Retainer from the connector. Use a small screw driver or your fingernail to pry up on the short sides of the strain relief where it clips on to the grey connector. Once that is done, you can gently pry up on the terminal retention tabs on the grey connector. These hold the terminals into the connector. When you lift them, you can pull the wire with the terminal out through the strain relief.

Reassembly of the connector is just as easy. Crimp the terminals onto the wires and get ready to put it back together. Just make sure that you put the right wires back into the right cavities in the connector. The cavities area marked with an identification number on the inside of the strain relief. Here’s how the wires should go back in.

5- Black

6- Green

7- Blue

8- Red

Make sure that the terminals are pushed to the front edge of the grey connector. Once you have all of them in, you can snap the clear retainer back onto the grey connector. Then close the strain relief using the strain relief clips to hold it closed.

Give our team a call if you have additional questions about working with our CAN cable or the connector components. You can contact us directly by clicking this link.

Picture of the Limeworks TS1342 Turn Signal Switch

Wiring Turn Signals- Limeworks TS1342

August 13, 2015/in Wiring /by admin

We get a lot of questions about wiring turn signals. Our MASTERCELL inputs are very flexible. These let you connect practically any switch to the Infinitybox system. We have other blog posts that show you how to wire GM-style steering columns to the Infinitybox MASTERCELL. You can check that out here. Flaming River columns and IDIDIT columns use the exact same connector so you can use the same instructions.

We got a call from a customer installing a TS1342 turn signal switch sold by Limeworks. This is a very classy turn signal switch with a very retro look. There are two versions: one for a 1 1/2″ column and one for a 1 3/4″ column. It also has a lit end that can be used as a turn signal indicator if you don’t have one on your dash.

The customer asked about how to wire the turn signal switch into his Infinitybox MASTERCELL. It’s is such a good question, we created a new application note for it and posted it.

The wiring diagram that comes with the switch shows the need to use a 3-prong flasher module. You need this if you’re connecting it to a traditional wiring harness. If you’re connecting it to our Infinitybox system, you don’t need the flasher. We build that into the system so no external flashers are required. This diagram shows you how to connect the Limeworks TS1342 turn signal switch into the Infinitybox system.

Picture of wiring diagram showing how to wire the Limeworks TS1342 turn signal switch with the Infinitybox system.

The MASTERCELL inputs work by getting connected to ground. This column switch was designed to supply battery voltage to a flasher, which fed the turn signal bulbs. As we said above, we can eliminate the flasher. To make it work with the MASTERCELL inputs, you simply ground the wire on the switch that was connected to the battery. The two wires that connected to the left and right turn signals will connect to their respective inputs on the MASTERCELL. That’s it. When you push the switch to the left, you’re electrically connecting the former power wire to the left turn signal input. Since the former power wire is grounded, the left turn signal input wire gets connected to ground. The MASTERCELL sees this and tells the POWERCELLs to flash the left turn signal. The same thing happens for the right turn signal. The diagram shows you which wires on the switch need to connect to the MASTERCELL inputs. Use the configuration sheet that came with your kit as a guide to identify the MASTERCELL wire colors.

The other thing that you’ll notice in our wiring diagram is that the brake pedal switch doesn’t get connected to the turn signal switch. The original wiring diagram had that because the brake pedal jumpered the left and right turn signals together for the brake lights. This is something that we manage within the MASTERCELL. If your rear turn signals are also your brake lights, you simply use the MASTERCELL input that is assigned to the 1-filament brake lights and connect that to your brake pedal switch.

The last thing to talk about in this post is turn signal indicators. Depending on your gauges, you can handle this a few different ways. If you have turn signal indicators on your dash, we recommend splicing off the left and right turn signal outputs on the front POWERCELL and connect them to the indicators. Most turn signal indicators draw very little current so you can run a light gauge wire, like 22-AWG from the POWERCELL outputs to the indicators. If you’re using LED’s make sure that you’re paying attention to their polarity. Also, check the voltage rating of your LED’s. Most are rated to 5 volts or less. You may have to add a resistor in series to limit the current flowing through the LED. Give our tech guys a call if you have question here.

One of the cool things about the TS1342 is that it has an indicator light on the tip of the stalk. It can flash when the turn signals are flashing. To do this, you need to splice off the POWERCELL outputs for the left & right turn signals like I mentioned above. Since there is only one light, you need to connect the outputs together. However, you need to put diodes in the circuit to isolate the left turn signal from the right. Without these diodes, the left turn signal would flash when the right was flashing and vice veat companies like www.digikey.com or www.mouser.com. Or you can pick these up at a Radio Shack if they are still open where you are. See the diagram for details on how to install these diodes. Remember, the orientation of the diodes is critical.

You can download a PDF of this application note showing wiring turn signals using the Limeworks TS1342 turn signal switch. If you have any questions about this, feel free to reach out to our technical support team at (847) 232-1991. Or click on this link to contact our team directly.

Picture of the Infinitybox 20-Circuit Kit

Personalities- Programmable Wiring Harness

August 5, 2015/in Wiring /by admin

The Infinitybox system has many powerful features that you just can’t get from a traditional fuse and relay harness. One of the most powerful are what we call Personalities. These tools will help you to get the most out of the wiring harness for your car, truck or specialty vehicle. Our Personalities give you a completely programmable wiring harness system.

A Infinitybox Personality describes how an output turns on when you turn on a switch. It is something that we manage in the software of the system and it gives you great flexibility for the functions of your electrical system. You connect your switches to the input wires on the MASTERCELL. When you turn on a switch, the MASTERCELL sends a command to the POWERCELL. This command tells the POWERCELL to turn on an output. In this command it also tells the POWERCELL how to turn on the output and how it should work. This is what we call a Personality.

Our most basic personality is what we call TRACK. This means that the output TRACKs the switch on the input. When the switch is on, the output is on. When the switch is off, the output is off. This is pretty simple. Most of the outputs in your Infinitybox system will use the TRACK personality. Headlights are a great example of the TRACK personality. When you turn on the headlight switch, the headlight output on the front POWERCELL will turn on. When you turn off the switch, the headlights turn off. Brake lights are another example. The brake lights will TRACK your foot pressing the brake pedal. When your foot is on the pedal and the switch is closed, the brake lights on the rear POWERCELL are on. When you lift your foot and the switch opens, the brake lights turn off. Other examples of use of the TRACK personality include ignition, starter, running lights, fuel pump and horn.

Another great personality is TOGGLE. When we use the TOGGLE personality, a momentary input to the MASTERCELL will command a POWERCELL output to turn on. Another momentary input to the same wire on the MASTERCELL will send a command to turn the same POWERCELL output off. In most cases, you’re using a momentary push-button connected to the MASTERCELL input. When you press and release this button, the MASTERCELL will command the POWERCELL to turn on an output. Pressing and releasing the button again, the MASTERCELL will command the POWERCELL to turn the output off. A lot of our customers use TOGGLE when they are putting simple momentary buttons on their dash to replace the OEM switches. You can use TOGGLE for things like headlights, running lights and parking lights.

A variant of the TOGGLE personality is our 1-BUTTON START. This replicates most modern OEM single button starting systems. If you use a traditional ignition switch to turn on your ignition and start your engine, there are separate inputs for the ignition and starter. Both of these inputs use the TRACK Personality. The ignition is on as long as the switch is on. In all of our kits, you have the option to use a different MASTERCELL input wire and connect it to a momentary button. This will get you our 1-BUTTON START function. When you press and hold the button, the MASTERCELL turns on the ignition output, waits 1 second for the fuel pump to prime, they cranks the starter. Once the engine starts, you release the button. The MASTERCELL will turn off the starter output but will leave the ignition output on so that the engine will run. To stop the engine, you simply press and release the button again.

We also have several personalities built into the system to manage turn-signals and 4-way flashers. With the Infinitybox system, you do not need any external flashers. The POWERCELL flashes the outputs automatically, even if their LED’s. This link will take you to more information on the personalities used for turn signals and 4-way flashers.

Another common personality is TIMED. This lets you time outputs on your POWERCELL. Instead of having to add external timers, we build this into the system. Examples include headlight timers. When you turn off your car, you headlights can stay on for 30 seconds while you get out of your garage. Or you can time your cooling fan to continue to run after you turn off the ignition. These are very easy things to do in the Infinitybox system. With a traditional wiring harness, you’d have to add additional modules to make this work.

Here’s one last personality example for this blog post. We use MOSFETs in our POWERCELLs instead of relays. This lets us do some things that no other system can do. One of the coolest is THEATRE DIMMING. This replicates what all new cars do. We can set your interior lights to gradually fade when you close your door. This is built into the system and requires no additional hardware. When you close your doors, we pulse the POWERCELL output to your dome lights to make it fade gradually. It is a simple and elegant effect that makes your classic car feel like the latest OEM car.

When you get a 10 or 20-Circuit Harness kit from Infinitybox, you get a configuration sheet that is specific to your wiring system. It lists all of the personalities for each of the outputs in your harness. This link will take you to the configuration sheet for our most popular front-engine configuration.

There are many more examples of Personalities that can be applied to your Infinitybox system. Give our technical support team a call at (847) 232-1991 to talk through how we can tailor a wiring system specifically to your project. You can also click on this link to contact our team directly.

Diagram showing how to wire turn signals and brake lights with the Infinitybox system.

Turn-Signal Options

May 18, 2015/2 Comments/in Wiring /by admin

We get a lot of questions about turn signals and brake lights. There are two options in our standard front-engine configuration: Mechanical Multi-Filament and Mechanical Single-Filament. This is where there is sometimes some confusion. In both cases, this is where you use a traditional steering column with the canceling mechanism built in. This can be an OEM column or one from an aftermarket company like IDIDIT or Flaming River. In both cases, the mechanism in the column turns off the turn-signal action when the steering wheel returns to the center position.

The mechanical column, multi-filament configuration should be used when you have separate filaments in the rear of the car for the turn-signals and the brake lights. These could be completely separate bulbs or different filaments in a multi-filament bulb. The inputs to the MASTERCELL control separate outputs for left & right turn-signals plus the brake light. There is a good rule of thumb for multi-filament turn-signals: if your turn-signals are amber, you should probably be using the multi-filament configuration.

The mechanical column, single-filament configuration should be used when the brake lights share a common filament with the turn-signals in the back of the car. Remember that you need to look at the filaments, not the bulbs. In this case, the MASTERCELL inputs will activate the left and right turn-signals as directionals. You only wire the left and right turn-signal wires to the bulbs. No brake light output is required. For the brake light, the left and right turn-signal filaments light together.

Once you figure out what you need in the car, you just pick the inputs that you need and wire them to the column. This schematic will show you how to wire the MASTERCELL inputs to the GM, IDIDIT and Flaming River columns.

If you have any questions about wiring your turn-signals, give our team a call at (847) 232-1991 or email us at sales@infinitybox.com. Or you can contact our team directly by clicking this link.

Picture of the Honda S2000 Engine Start Button.

One-Button Start

May 17, 2015/5 Comments/in Wiring /by admin

A lot of our customers use our One-Button Start function. This is standard in our 10 and 20-Circuit Harness Kits.

To start your engine, you have a few options when you wire your car with the Infinitybox. You can use a traditional keyed ignition switch. You pick our standard input wires for the ignition and starter and wire those to the switch.

Or you can use our One-Button Start function. This involves taking one MASTERCELL input wire and connecting it to a momentary button. That is all you need to manage your ignition and starter outputs.

When you press and release the button, the ignition output turns on. When you press and release the button again, the ignition output turns off. Pretty simple. To start the engine, you simply press and hold the button. The POWERCELL turns on the ignition, waits one second for the fuel pump to prime, then cranks the starter solenoid. The starter will crank as long as you are pressing the button. When the engine starts, you simply release the button and the starter will stop cranking. The POWERCELL turns off the starter output but leaves the ignition output live so the engine will run. To shut down the engine, you simply press and release the button again.

A lot of our customers use the Honda S2000 Start button. This is a really popular button. This link will take you to a wiring diagram showing how to use the Honda S2000 button with our one-button start.

You will note one thing about the way the Infinitybox One-Button Start works. If you press and release the button to turn on the ignition, you have to press and release the button to turn the ignition off before you can press and hold it to crank the engine. The personality that manages this function does this for a very important reason. We don’t know if the engine is already running when you press the button. Pressing and releasing the starter button forces the system to shut off the ignition output so that you cannot accidentally crank the starter with the engine running.

This function is another great example of how Infinitybox can help you to simplify the electrical system in your car. You can certainly get a starter function similar to ours but it requires a separate box to manage the function. With Infinitybox, you can eliminate the need for extra control modules to have to connect into your wiring harness.

Click this link to contact our team with any questions about using our one-button start feature.

The Infinitybox MASTERCELL

Wiring MASTERCELL Inputs to the GTM Column

May 14, 2015/in Wiring /by admin

For all of those guys building a Factory Five GTM with the C5 Corvette steering column, here is how you connect the Infinitybox MASTERCELL inputs to the column harness.

Connect these pins to the MASTERCELL inputs:

Pins D, Z, X & W – Connect to Ground
Pin V – Horn input to MC
Pin R – Park lights input to MC
Pin L – Low Beam input to MC
Pin K – High Beam Input to MC
Pin G – Left Turn Input to MC
Pin F – Right Turn Input to MC

Depending on which turn-signal style you want (1-filament vs. multi-filament), refer to your configuration sheet for the specific wire colors. You can download the Infinitybox GTM Configuration Sheet by clicking here.

Many thanks to Shane Vacek at VRaptor Speedworks for sending us this information.

Title image from Jeff Jordan's article covering the Do's and Don'ts of wiring race cars

Great Wiring Article

February 6, 2015/in Wiring /by admin

Wiring is one of those things that intimidates a lot of people. There is a mystery around things when we can’t see how they work. We have spent a lot of time over the years helping guys learn simple tricks about how to wire their cars better with our Infinitybox system.

Regardless of how you’re wiring your car, there are some simple tricks and techniques that will make the job easier, safer and more reliable. This includes when you wire your car with our Infinitybox system, or just add a simple relay to an existing car. Josh Kirsh of Chevy Hardcore and Jeff Jordan of Jordan Innovations wrote a great article that just ran in Chevy Hardcore. It covers some basic but important tips for wiring.

The article is called The 5 Do’s and Don’ts of Wiring a Race Car. All of the tips are really intuitive and simple to follow. Here are the highlights.

The Do’s…

Diagram everything. This will make troubleshooting in the future very easy.
Use crimps when vibration or strain is an issue. There are good reasons not to solder splices.
Stagger your joints.
Use proper strain relief and abrasion protection.
Use high quality materials and the right tools.

The Don’ts…

Don’t hack it!
Don’t wire both ends then route the wires.
Watch solder joints in areas of high vibration or strain.
Use the right tools for important crimps.
Take your time. Don’t Rush!

You can catch the full article with a bunch of great pictures at this link.

You can learn more about what Jeff and his team are doing by visiting their website at www.jordaninnovations.com

If you have additional questions about wiring your car with our Infinitybox system, give our team a call at (847) 232-1991. You can also reach out team directly by clicking this link.

Image of wiring diagram showing how to wire the MSD 6A with the Infinitybox system.

Wiring the MSD Ignition System

January 7, 2015/1 Comment/in Wiring /by admin

Our Infinitybox systems are used to power all of the electrical functions in your car. This includes all of the systems that run your engine. One of the most popular ignition systems in the automotive restoration and performance space is from MSD. The MSD 6AL is a powerful and easy to install Ignition Control system. It gets the spark to the engine but our Infinitybox system gets it the power it needs to run. This blog post shows how easy it is to wire on your key-on or ignition power to the MSD 6AL. This instructions will work for any of the Ignition Control systems in the MSD lineup.

Before you get too far, it is very important that you read and follow the instructions that come with your ignition system. We are going to show you how to wire the key-on power. You need to refer to their instructions and diagrams to wire all of the other connections that go to their box. Their manual highlights warnings and critical things to follow when you are wiring their boxes. Be sure to read these and completely understand them before you proceed. You can download a copy of the MSD manual by clicking on this link.

Also, this blog post and wiring diagram show you only how to wire the key-on power to the ignition system. See the manual that came with your Infinitybox harness kit and other wiring diagrams for the rest of the functions in the car.

This picture shows you a simple diagram for wiring the MSD 6AL.

Image of wiring diagram showing how to wire the MSD 6A with the Infinitybox system.

There are three wires from the MSD 6AL that we will consider for this wiring diagram. The heavy red wire, the heavy black wire and the smaller red wire.

Heavy Red (Positive)- This wire connects directly to the battery positive (+) terminal or to a positive battery junction or the positive side of the starter solenoid. Note: Never connect this to the alternator.
Heavy Black (Negative)- This wire connects to a good ground, either at the battery negative (-) terminal or to the engine. We can’t stress enough the importance of good ground connections. Spend some time here and do this right.
Red- This wire connects to the POWERCELL ignition output on the Infinitybox system. See your configuration sheet for the location and color of this wire.
Connect the remaining wires according to the MSD instruction manual.

The heavy red wire that brings the primary power from the battery is fused internally to the MSD 6AL but this does not protect the wire if it were to get shorted to ground. We recommend putting a fuse ahead of this wire at the point where you connect it to the battery. A 25-amp fuse in this wire would safely protect it.

You are then going to connect the MASTERCELL input for ignition to your ignition switch. The input works by simply being connected to ground. See the configuration sheet that came with your kit for the connector location and wire color for the ignition input. You can also choose to use our integrated one-button start input to control both the ignition and the starter. Again, see your configuration sheet for the location and color of this wire.

The POWERCELL ignition output is your key-on power. You are going to connect this to the red wire on the MSD. You can also use this wire to power other accessories in the car that need ignition power. Examples include gauge power, ignition power for a head-unit and ignition power for a Vintage Air system. You can create a simple ignition power bus using a terminal strip for all of these functions. You can use the Infinitybox Splice Saver Kit to create a reliable buss bar.

You need to insert a fuse into the POWERCELL to protect the ignition harness. Remember that a fuse is designed to protect the wiring in the harness. The fuse should be sized to protect the smallest gauge of wire in the harness connected to that output. All of our standard harnesses are 14-AWG wire, so you can protect them with a 25-amp fuse. If you connect any smaller wires to these outputs, you need to choose the right size fuse to protect the wire. See other posts in our blog about proper selection of fuses for different wire gauges.

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

If you have any questions about this wiring diagram or anything else with our Infinitybox system, give our technical support team a call. We can be reached at (847) 232-1991 or sales@infinitybox.com. You can contact our team directly by clicking this link.

Image showing how to wire a switch with an Indicator Light to the Infinitybox MASTERCELL

Wiring a switch with an indicator

January 2, 2015/in Wiring /by admin

The inputs to the Infinitybox MASTERCELL are very easy to use. You simply connect the input wire to a switch and ground the other side. When you turn on the switch, the input gets connected to ground, which tells the MASTERCELL to turn on a POWERCELL output. You can get your ground connection from either the ground wires that we supply in the MASTERCELL harness or you can connect them right to ground on your chassis. This approach reduces the total number of wires that you need to go to your switch and lets us a very small gauge of wire to connect to the switch.

Sometimes, a customer wants to use a switch that has an indicator light built into it. That is very easy to do with the addition of a few simple components.

Here is an example of a popular switch that a lot of our customers use. It is a simple, round toggle switch. There is an LED built into the switch that can light up the rocker when the switch is in the on position. You can purchase a switch like this from Waytek by clicking this link.

Image showing how to wire a switch with an Indicator Light to the Infinitybox MASTERCELL

The important thing to note here is that you MUST install a diode in the input wire from the MASTERCELL to the switch. This should be a 1N4001 diode and can be purchased on-line. Please note that the direction of the diode is very important. The stripe on the diode should be on the side of the wire that is connected to the switch, not the side going to the MASTERCELL.

You can get your 12-volts from anywhere in the car. If you want, you can use Ignition power from the POWERCELL for the indicators. That way your switches will only light when the ignition to the car is on. Alternately, you can wire this directly to a constant power supply from the battery.

Also note that the polarity of the wiring to the switch is important. Make sure that you are looking at the wiring diagram that came with your switch and referencing our wiring diagram.

If you follow these simple instructions, your switch indicators will light up when you turn on the switch. You can download a PDF version of this wiring diagram by clicking this link.

If you have any additional questions about this wiring diagram, please reach out to our technical support team at (847) 232-1991 or email us at sales@infinitybox.com. You can also contact our team by clicking this link.

Image of wiring diagram showing how to wire the Holley Dominator EFI System with the Infinitybox System.

Wiring the Holley Dominator EFI System

December 18, 2014/4 Comments/in Wiring /by admin

EFI systems have been gaining in popularity for years. Guys want the conveniences, flexibility and power that they get from the engines in modern cars. Companies have been leveraging technology developed by the large OEMs to bring Electronic Fuel Injection systems to restorations, hot-rods, street rods, resto-mods and component cars. Our Infinitybox system does the same thing. We take technology used in practically every new car and bring it to the average guy in his garage. He gets the conveniences of less wire, more diagnostics and better functionality out of his wiring system.

It is very easy for us to bring the two systems together: Infinitybox powering EFI. This is a question that we get a lot. How do I connect my Infinitybox system to my EFI system? This post shows you how to connect the Holley Dominator EFI System to the Infinitybox 20-Circuit System.

First things first, Holley has some very important notes and warnings about wiring their system. Be sure to read their manual thoroughly and follow their instructions. The most important things are related to good grounds and keeping all signal & data wires away from the coil wires.

You are going to wire the Dominator following their instructions. There are two simple differences when you connect in the Infinitybox system.

Image of wiring diagram showing how to wire the Holley Dominator EFI System with the Infinitybox System.

First, you are going to give the Dominator its key-on power from the Ignition output on the front POWERCELL. You going to connect the ignition switch to the ignition input on the MASTERCELL. When you turn on the ignition switch, the MASTERCELL sends a command to one of the POWERCELLs, usually the front, to provide battery voltage to the ignition output. This is usually the light-green output on the front POWERCELL but always refer to the configuration sheet that came with your Infinitybox kit.

Next, you are going to use the Infinitybox system to power the fuel pump. There are several advantages to doing this. First, the Dominator fuel pump output is only capable of delivering 10-amps. In most cases, you’d need to add a relay to switch the current to the pump. The POWERCELL is the relay and it is capable of delivering 25-amps. You won’t need to add a relay for most commercially available pumps. Second, the fuel pump is switched from the rear POWERCELL, which is mounted in the rear of the car. You don’t have to run any extra fuel pump wires to the back of the car. You just wire the fuel pump from the rear POWERCELL.

There is an important warning that must be followed when you wire MASTERCELL inputs to other controllers, like EFI systems. MASTERCELL inputs are designed to be connected to ground. This lets us keep the wire bundles small and simplify how you connect to switches. Applying 12-volts to a MASTERCELL input will damage the Cell and will void its warranty.

In the case of the Holley Dominator EFI system, it puts out 12-volts for the fuel pump trigger. You can simply convert this 12-volt trigger to a ground trigger with one of our inVERT Mini modules or a relay. The application note that we created for the Holley Dominator EFI system shows using an inVERT Mini. You can download a simple wiring diagram showing you how to do this with a relay by clicking this link.

You can download a PDF of the application note that shows how to wire the Holley Dominator EFI system with the Infinitybox 20-Circuit Harness by clicking this link.

If you have any questions, please feel free to contact our technical support group at (847) 232-1991 or email us at sales@infinitybox.com. You can contact our team directly by clicking this link.