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Image used courtesy of Holley Performance Products, Inc.

Wiring the Holley HP EFI System

May 20, 2022/0 Comments/in Wiring /by admin

This blog post goes through the details of wiring the Holley HP EFI System with our Infinitybox 20-Circuit Kit. We will show you the ease and simplicity of wiring your EFI system with Infinitybox. The wiring is simple and short and you can eliminate the need for external relays. We’ll go through the key steps and give you a wiring diagram that shows you all the details to wire your Holley HP EFI Engine Management System with our Infinitybox system.

Before we get too far, you must thoroughly read and understand the instructions that came from Holley to install the HP EFI system. Please consult their website to get the instillation instructions. The other important thing to consider here is that we are going to show you how to connect your Infinitybox wiring system to the Holley HP. This will include wiring the key-on ignition power, the cooling fan trigger and the fuel pump trigger. Consult the Holley manual for all details regarding primary power from the battery, coil wiring, injector wiring, sensor wiring and grounds. This diagram shows you the connections between your Infinitybox system and the Holley HP ECU.

Picture of wiring diagram showing how to wire Holley HP EFI system with the Infinitybox wiring system

Your Infinitybox 20-Circuit Kit powers the key electrical systems in your car. We’re going to provide the key-on ignition power to the Holley HP system. You are going to connect your POWERCELL ignition output to the 12V Switched wire in the Holley Harness. This is their Red/White wire. In most Infinitybox configurations, your ignition output is the light-green wire on your front POWERCELL but we encourage you to always use your configuration sheet to confirm wire colors in your specific kit. You can get more details on your configuration sheet by clicking this link. When you turn on your ignition switch, the POWERCELL will provide the key-on ignition power that the Holley HP needs to run. You can learn more about wiring your ignition switch to your MASTERCELL by clicking this link.

You can use an output your Infinitybox rear POWERCELL to provide the power to your fuel pump. There are several advantages to using the fuel pump output on your POWERCELL. First, you do not need to use a relay. The POWERCELL has the capability to control 25-amps to your fuel pump directly without a relay. The second advantage is that you can power the fuel pump from the POWERCELL in the back of your car. This keeps your wiring short and easy to install. The Holley HP ECU has a fuel pump trigger that you can connect into the MASTERCELL input for your fuel pump. The Holley fuel pump signal is +12 volts so you must use one of our inVERT Minis to flip this to a ground trigger to go into the MASTERCELL. You can learn more about the inVERT Mini at this link.

You can also use an output on your Infinitybox front POWERCELL to power your cooling fan. You get same benefits with your cooling fan as you do your fuel pump. Your wiring is shorter and you do not need to use an external relay to control the fan. You can either use a thermostatic switch on the engine or you can have the Holley HP ECU send the MASTERCELL the signal to control the fan. This link will show you how wire in a thermostatic switch. The Holley HP ECU has programmable outputs that can be used to signal the MASTERCELL input for the cooling fan. You need to use one of their “G” or ground switched outputs and need to configure this within their software tool. You must use a diode to isolate the output on the Holley HP from the MASTERCELL. See the details in our wiring diagram.

Those are all of the connections that you need to make between your Infinitybox 20-Circuit Kit and the Holley HP EFI system. You can download a PDF of this wiring diagram by clicking this link.

Click on this link to contact our technical support team if you have any questions about wiring your Holley HP EFI system with Infinitybox.

Haltech ECU Wiring Diagram

February 24, 2022/1 Comment/in Wiring /by admin

Here’s the answer to a question that we get asked a lot. Will the Infinitybox system work with my ECU or EFI system? The answer is always, YES. We play nicely with everyone’s fuel injection system. We recently received this question related to the Haltech Elite 950 ECU. This blog post is going to show you how easy it is to wire this EFI set up with our Infinitybox system.

Just like anything else, please start by reading the instructions. This blog post is going to cover the details of wiring the Haltech Elite 950 ECU with the Infinitybox 20-Circuit Kit. We’re going to assume that you’re running our Front-Engine configuration. If you’re running our Rear-Engine configuration, check your configuration sheet for the specific locations of the inputs and outputs referenced in this blog post. The Haltech part number for this ECU is HT-150700 and you can get to its details at this link. Read and understand their instructions before you get into wiring.

This blog post is going to show you how to get ignition power to their ECU. It will also show you how to take the cooling fan and fuel pump triggers from the ECU into the MASTERCELL. Lastly, this blog post will show you how wire in the power to the injectors and coils so you can eliminate the need for external relays.

This diagram will show you the connections that you will make between your Infinitybox system and the Haltech ECU harness.

Haltech ECU Wiring Diagram with Infinitybox Control

To start, the ECU needs to be grounded. You need to take the black wire going to terminal 10 on the 34-pin connector and ground that. This should be through a metal-to-metal connection to the chassis. There should be no dirt, grease, oil, paint, rust, powder coating or anything else in this connection.

Next, the ECU needs key-on-power. This power should be on when the key is in the run and start position. You are going to get this power from the Ignition output on your POWERCELL. In most kits, this is output 3, the green wire, on the front POWERCELL. Check your configuration sheet for the wire colors for your specific kit. Since your POWERCELLs manage all of the high-current switching in your electrical system, you do not need external relays to control your fuel injection system. Connect your Ignition output from your POWERCELL to the “12V ECU” wire going to terminal 26 on the ECU harness. This is the red wire with the blue tracer.

You can bring ignition power to the coils and the injectors from the Ignition output on your POWERCELL. You can splice these wire together, use a terminal block or use our Splice Saver kit to make a reliable and sealed connection. This diagram will show you how to connect the Splice Saver kit to your ignition output, the coils and the injector.

Infinitybox wiring diagram showing Haltech Key-On Power Wiring Details

Next you are going to connect the outputs on the Haltech ECU for the fuel pump and the cooling fan to their inputs on the MASTERCELL. Haltech dedicates DPO 5 for the fuel pump. You can connect that to your MASTERCELL Input for your fuel pump. We strongly recommend isolating the MASTERCELL from the ECU with a 1N4001 diode. The orientation of this diode is very important. Refer to the diagram above to show proper orientation of the anode and cathode of this diode.

You can use any of the other digital outputs on the Haltech ECU to trigger the MASTERCELL input for the cooling fan. You must isolate the ECU from the MASTERCELL using a 1N4001 diode like the fuel pump. We chose DPO 2 in our diagram. You can use any of the available digital outputs however you must set them up correctly in their programming application.

Please note that you cannot pulse the DPO signal from the ECU that goes into the MASTERCELL for the fuel pump or the cooling fan. These should be on and off signals to turn the pump and fan on and off.

You can download a PDF version of our wiring diagram for the Haltech Elite 950 ECU by clicking this link.

You can contact our technical support team with any questions by clicking this link.

Picture of the Dakota Digital RTX Gauges

Wiring Dakota Digital RTX Gauges

May 28, 2020/1 Comment/in Wiring /by admin

Dakota Digital has been in the business of making advanced electrical products for the Automotive Aftermarket for a long time. Their products include gauges, lighting, cruise control systems, gear indicators, linear actuators, climate control interfaces and other automotive accessories. We’ve posted details before on how to wire their automatic door lock controller and their VHX series of gauges. They recently introduced their RTX gauge family. These bring classic styling with modern features to any hot-rod, street rod, resto-mod or Pro-Touring build. This blog post is going to walk you through the details of Wiring Dakota Digital RTX Gauges to our system.

Before we go too far, this post is only going to cover wiring primary power, ground, key-on power, gauge lighting and the signals for the indicators on the dash. Their manual will cover the details for the rest of the wiring. Carefully read and understand all of the details of the RTX instructions before you go any further. You can get their manual by clicking this link.

This diagram shows an overview of the connections to the Infinitybox system for the RTX controller box.

Picture of the Infinitybox wiring diagram showing how to wire the Dakota Digital RTX Gauges

Their RTX controller needs constant power from the battery. Connect the 12 VDC CONSTANT terminal on their controller box directly to the positive terminal on the battery. You must fuse this wire at the battery for safety. You also have to connect the GROUND terminal on their controller box to a good chassis ground connection. This must be a metal-to-metal connection that is free of paint, powder coating, dirt and debris.

Here are the connections that are specific to the Infinitybox system.

First, the RTX controller box needs ignition or key-on power. This is what turns the gauges on when you turn the key in the car. Your ignition output is going to provide this power. In most systems, this output is number 3 on the front POWERCELL. Check the configuration sheet that came with your kit to confirm. This ignition output is going to power your engine management. You are going to splice into this wire to connect to the IGNITION PWR terminal on the RTX controller box. You can manage this splice a few different ways but our Infinitybox Splice Saver Kit is a great way to create a sealed junction point for everything in your car that requires ignition power.

Next, you need to connect your parking light output on the front POWERCELL to the DIM terminal on the RTX controller box. This will turn on the illumination on the RTX gauges when you have your parking or headlights on. Just like the ignition output, splice into the parking light output on your front POWERCELL and connect this to the DIM terminal.

Next you need to connect your dome light output to the EX terminal in the DOME INPUT section of their RTX controller. You can use any of the OPEN outputs on your POWERCELLs as your dome light output. This blog post will get you more detail on wiring your dome lights and pin switches on your 20-Circuit Kit.

Lastly, you need to connect the POWERCELL outputs for your turn signals and high-beam to their respective terminals on the RTX control box for the turn signal indicators and high beam indicators. Just like the key-on power and parking lights, splice into the output wires for the left turn signal, right turn signal and high-beams and connect them to the LEFT, RIGHT and HIGH terminals, respectively. When your POWERCELL is flashing the left turn signal, the indicator for the left turn signal will flash on the Dakota Digital gauges. When you have your high beams on, your high beam indicator will light up on the gauges.

Our Infinitybox system can power any electrical system in your resto-mod, street rod, pro-touring build or race car. Wiring Dakota Digital RTX Gauges is a great example of that. You can download a PDF of this wiring diagram by clicking this link.

Our technical support team is available to answer any questions about blog post or any other topics about wiring your car with our Infinitybox system. Click on this link to get in touch with our team.

Sample picture of the FAST XFI 2.0 Fuel Injection Controller

FAST XFI 2.0 Wiring

February 8, 2019/0 Comments/in Wiring /by admin

Electronic Fuel Injection systems have completely changed the way guys control their engines in resto-mods, street rods, kit cars and Pro-Touring builds. All the new systems are simple to install, can control hundreds of horse power and automatically tune themselves. Fuel Air Spark Technology (FAST) has been one of the most significant innovators in the area of EFI systems for the restoration and performance markets. Our Infinitybox plays nicely with any EFI system on the market including the full range from FAST. This blog post will show you how to integrate their FAST XFI 2.0 system with our Infinitybox 20-Circuit Kit.

This blog post is going to walk you through the details of wiring your FAST XFI 2.0 EFI system with our Infinitybox system. Specifically, we’re going to talk about wiring primary power, wiring ignition power, wiring the fuel pump trigger and wiring the cooling fan trigger. All of the rest of the connections between the FAST XFI 2.0 and the engine are covered in their instructions. Please carefully read and thoroughly understand the manual for your EFI system before you go any further. The manual and wiring diagrams for the XFI 2.0 are built into their tuning software package. You can download that by clicking this link.

The following wiring diagram shows all of the connections between the FAST XFI 2.0 and the Infinitybox system.

Picture of a wiring diagram showing the connections between the FAST XFI 2.0 and the Infinitybox System.

Just like most other electrical systems in your car, the XFI 2.0 needs constant 12-volt power from the battery. This connection is the red wire going to cavity B18 in their harness. This wire must be connected directly to the positive terminal on your battery. It is also highly recommended that you have a fuse protecting this wire. The FAST manual recommends a 3-amp fuse in-line between the battery and the XFI 2.0 controller.

Next, you need to provide ignition power to the XFI controller. When your key is in the run position, the Infinitybox system will provide switched ignition power to the XFI controller so that it will control your engine. This ignition power will come from the ignition output from one of your POWERCELLs. Please check the configuration sheet that came with your specific kit to validate the POWERCELL output and wire color. Your POWERCELL output for ignition is going to connect to the Switched Ignition wire on the XFI harness. This is the pink wire going into cavity B17. There is no need to add a fuse to protect this wire since the fuse for it is built into the POWERCELL.

The FAST XFI 2.0 system is smart enough to signal for the cooling fan and fuel pump when it senses that it needs them. You can connect these signals to your Infinitybox MASTERCELL so that your POWERCELLs will control your cooling fans and fuel pump directly. Wiring it this way saves you in the amount of wire you need to run and also eliminates the need for extra relays. Our POWERCELLs have the solid-state relays built into them.

The FAST XFI 2.0 is set up to ground trigger relays for the cooling fan and fuel pump. This is ideal because the MASTERCELL inputs work on ground triggers. We still highly recommend installing diodes between the MASTERCELL and the XFI controller to buffer your Infinitybox system from any stray voltage that could be on the cooling fan and fuel pump triggers. We recommend a 1N4001 diode. These can be purchased from Amazon. The orientation of the diode is very important. If they are installed backwards, the triggers will not work. Please see the orientation in the wiring diagram above. The anode side of the diode should be connected to the MASTERCELL input. The cathode should be connected to the trigger wire on the XFI 2.0 controller.

Your MASTERCELL input wire for the cooling fan will connect to the Fan Control Output wire on the FAST harness. This is the black wire at cavity B10. The 1N4001 wire should be installed per our wiring diagram.

Your MASTERCELL input for the fuel pump trigger will connect to the Fuel Pump Control Output on the FAST harness. This is the black wire at cavity B5 on the FAST harness. Just like the cooling fan input, the diode should be wired per our wiring diagram.

Once you have made these connections to the FAST XFI 2.0 system, follow the manual that came with your 20-Circuit Kit to make the rest of the connections to your ignition switch, starter solenoid, cooling fan and fuel pump.

As you can see, our Infinitybox 20-Circuit is a versatile and power wiring harness system. We can easily interface with any electrical component in your car or truck build. You can download a PDF of this wiring diagram by clicking this link.

Click on this link to get in touch with our technical support team to answer any additional questions about wiring your FAST XFI 2.0 electronic fuel injection system.

Wiring the Holley Sniper EFI

October 25, 2017/1 Comment/in Wiring /by admin

Until recently, electronic fuel injection was completely out of the hands of your typical automotive enthusiast. Over the past years, many different companies have introduced powerful and elegant systems to bring the benefits of EFI to anyone. Holley recently introduced their Sniper EFI system. This is a cost-effective EFI system that can handle up to 650 horsepower and can be tuned without a laptop. Wiring the Holley Sniper EFI system is a breeze with our Infinitybox 10-Circuit or 20-Circuit Kits. This blog post will take you through the details.

Our Infinitybox system can interface with any electronic fuel injection system in the market. Wiring the Holley Sniper EFI is as simple as wiring their Terminator or their Dominator. Click on this link to get to the details of wiring the Holley Terminator. Click on this link to get to the details of wiring the Holley Dominator.

Before you start wiring the Holley Sniper EFI, you must thoroughly read and understand the instructions that came with your kit. This link will take you to the Holley manual. Note that this blog post is just going to cover wiring ignition power from your Infinitybox system and wiring the fuel pump & cooling fan. The Holley manual will cover the rest of the wiring details.

This diagram shows you the connections between your Holley Sniper EFI and your Infinitybox system.

Picture of the Infinitybox wiring diagram showing how to wire the Holley Sniper EFI System with the Infinitybox 20-Circuit Kit

First things first, you need to get battery power and ground to the Sniper. The red wire in their 7-pin connector must go directly to the positive terminal on your battery. The black wire in their 7-pin connector must go to ground. As we discussed in other blog posts, 90% of all electrical problems relate to a bad ground. Make sure that you have a solid metal-to-metal connection to your chassis with no paint, grease, powder coating or dirt in the way.

Next, you need to bring ignition power from your POWERCELL to the pink wire on their 7-pin harness. In most Infinitybox systems, this is the light-green wire on your front POWERCELL but check your configuration to be sure. This POWERCELL output will supply battery power to the Sniper whenever you have the ignition switch on.

Next, you need to connect your MASTERCELL input for your cooling fan to the light-blue wire on the Sniper 10-pin harness. You must install a diode in series between the MASTERCELL input and the cooling fan trigger on the Holley harness. We recommend a 1N4001 diode. Note that the orientation of this diode is critical. Check the diagram above for the correct orientation of the stripe on the diode.

There are several advantages to using the Infinitybox system to control the cooling fan directly off of the Sniper harness. First, you do not need to add a relay. That is built into the POWERCELL. Second, our cooling fan outputs are set to soft-start the motor. Click here to learn more about the benefits of soft-starting.

Next, it is time to wire the fuel pump. The dark-blue wire on the 7-pin connector is the fuel pump trigger. This is a 12-volt signal so it cannot be directly connected to the MASTERCELL input for the fuel pump. You must use an inVERT Mini to flip this 12-volt signal to a ground signal for the MASTERCELL. This link will get you more details on the inVERT Mini. The diagram above will show you how to wire the inVERT Mini between the Sniper EFI harness and your MASTERCELL input.

There are several advantages of using the Infinitybox system to control the fuel pump directly from the Sniper harness. First, we can disable the fuel pump as a security measure if you have our inLINK Radio upgrade. More importantly, having the Infinitybox system control the fuel pump means that you have to run less wire in the car. The MASTERCELL is located close to the EFI system. The rear POWERCELL is mounted near the fuel pump in the tank. There is no extra fuel pump wiring required to make it work.

One quick note about the Sniper if you are using our One-Button Start feature. It takes their system 2.5-seconds to boot up. It is only after that time that the fuel-pump will start to prime. Our standard One-Button Start feature is set for a 1-second fuel pump prime. We can easily extend our fuel pump prime time to accommodate the timing required for the Sniper EFI system. Please talk to Infinitybox technical support when you place your order to make this change.

Wiring the Holley Sniper EFI system with your Infinitybox 20-Circuit Kit will get you all of the functionality that you need to control your engine. You can download a PDF of our wiring diagram by clicking this link.

Click this link to contact our team with any questions about how our Infinitybox system can streamline your wiring projects.

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.

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