Wiring Archives - Page 8 of 15

Picture of wiring diagram showing how to wire the AEM Infinity ECU with the Infinitybox 20-Circuit Kit

Wiring the AEM Infinity ECU

July 3, 2017/0 Comments/in Wiring /by admin

AEM Infinity ECU

As we’ve blogged about before, our Infinitybox system easily integrates into any fuel injection or engine management system. With our Infinitybox system and your ECU, you can easily power your engine management system plus seamlessly control your fuel pump and cooling fans. We have a lot of different examples of wiring diagrams for different ECU’s. You can get to them in the Resources section of our website by clicking this link. This post is going to cover connecting your AEM Infinity ECU to your Infinitybox 20-Circuit Kit.

AEM has created a very powerful series of engine management computers and electronic fuel injection systems. You can learn more about their product offering by clicking this link. Before you start to wire their ECU, you must carefully read and thoroughly understand the instructions that came with your AEM Infinity ECU. They have a very comprehensive set of instructions that walk you through the entire process. Check their website for the specific manual for your ECU.

This blog post and wiring diagram are only going to cover the connections between your ECU and the Infinitybox system. Specifically, this includes the ignition output that will supply key-on power to the ECU. It will also include the details on the fuel pump and the cooling fan. See the AEM manual for the rest of the wiring details.

The following diagram shows you all of the connections between the AEM ECU and the Infinitybox 20-Circuit Kit.

Picture of wiring diagram showing how to wire the AEM Infinity ECU with the Infinitybox 20-Circuit Kit

Please note that the wire colors and connector positions shown in this diagram are representation of a typical installation. Reference the specific configuration sheet that came with your Infinitybox kit for the exact wire colors and connector positions.

The first connection that needs to be made is from the front POWERCELL to the Ignition Switched Power on the AEM ECU. This is going to cavity 48 on the C1 connector on their harness. When you turn on your ignition, you will get battery voltage on this pin of their connector.

The next connection is for the fuel pump trigger. Connect the MASTERCELL input for your fuel pump to the PUMP terminal on cavity 41 on the C1 connector. Note that you must add a blocking diode in series on this MASTERCELL input. This can be a 1N4001 diode. The orientation of this diode is critical for correct operation of the fuel pump. Check the wiring diagram for the proper orientation of this diode.

Once you have the MASTERCELL input wired for the fuel pump trigger, connect the fuel pump output from the rear POWERCELL to your pump.

When the ECU sends the signal to turn on the fuel pump, the MASTERCELL input will get the trigger. The MASTERCELL will send a command to the rear POWERCELL to turn on the fuel pump. This lets you eliminate the fuel pump relay in the AEM harness and eliminates the need to run a separate fuel pump wire to the back of the car.

The last connections are for the cooling fan trigger. Connect the MASTERCELL input for your cooling fan to the FAN terminal on cavity 21 on the C1 connector. Note that you must add a blocking diode in series on this MASTERCELL input. Like the fuel pump input, this can be a 1N4001 diode. The orientation of this diode is critical for correct operation of the cooling fan. Check the wiring diagram for the proper orientation of this diode.

Once you have the MASTERCELL input wired for the cooling fan trigger, connect the cooling fan output from the front POWERCELL to your fan.

When the ECU sends the signal to turn on the cooling fan, the MASTERCELL input will get the trigger. The MASTERCELL will send a command to the front POWERCELL to turn on the cooling fan. This lets you eliminate the cooling fan relay in the AEM harness.

Please note that you must keep the EFI MAIN RELAY in the AEM harness. Follow their wiring instructions for this relay.

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

You can contact one of our technical support engineers by clicking here if you have any questions about this wiring diagram or anything else related to wiring your car with our Infinitybox system.

inTOUCH NET Apple Wi-Fi Data Setup

May 18, 2017/0 Comments/in Wiring /by admin

Our inTOUCH NET changed the industry when we introduced it in 2013. For the first time, practically anyone could wire their cars and get modern touch screen control from any smart phone or tablet. inTOUCH NET is unique because it uses Wi-Fi to communicate between your smart device and our Infinitybox system. This eliminates a lot of wire and lets you control you car remotely to unlock doors, control lights and roll down windows. A lot of people have asked how to properly connect their iPhone to inTOUCH NET so they have control of the car plus access to their cellular data. This blog post will get you those details. Please note that this blog post only describes how to set up an Apple iPhone or an iPad (standard or Mini) with a cellular data plan. Keep watching this space for instructions showing you how to do this for Android phones and tablets.

inTOUCH NET uses a secure Wi-Fi connection as the method to communicate between your smart device and your car. In a lot of cases, our customers want to use the cellular data on their iPhones or iPads for navigation, audio streaming or surfing the Internet when they are in their cars. These steps will show you how set up your iPhone or iPad so you can maintain access to your cellular data and be connected to inTOUCH NET.

These instructions assume that you are setting up your inTOUCH NET for the first time. Skip to STEP 5 if you have already connected your iPhone or iPad to inTOUCH NET.

STEP 1: Touch the Settings Icon.

Apple Settings Logo

STEP 2: Touch Wi-Fi Settings

Step 1 of connecting the Infinitybox inTOUCH NET Module to your Apple Device

STEP 3: Touch your inTOUCH NET SSID

Each inTOUCH NET broadcasts its own unique network name. For these instructions the inTOUCH NET that we are using will be inTOUCH_257. Yours will be different so check the configuration sheet that came with your inTOUCH NET. Make sure that your Infinitybox system is properly connected and powered up. It may take up to 1 minute after the system is powered up before the inTOUCH NET network name shows up.

Step 2 of connecting the Infinitybox inTOUCH NET Module to your Apple Device

STEP 4: Enter your inTOUCH NET Password.

The configuration sheet that came with your inTOUCH NET will have a unique password that lets you connect your smart devices to the network. Type in this password. After you complete this, press Join in the upper right corner of the screen.

Step 3 of connecting the Infinitybox inTOUCH NET Module to your Apple Device

STEP 5: Hit the Information icon to the right of the inTOUCH NET Network Name

Wait until you see the inTOUCH NET network name appear at the top of the screen with a check mark next to it. It may take up to 30 seconds for this happen after you successfully enter your password.

Step 4 of connecting the Infinitybox inTOUCH NET Module to your Apple Device

STEP 6: Get the Network Information for your inTOUCH NET

Write down the IP Address and the Subnet Mask shown on the screen. These will be unique to your inTOUCH NET and may not be the same as numbers shown in the picture below. Once you have written this down, press the Static button as shown in this picture.

Step 5 of connecting the Infinitybox inTOUCH NET Module to your Apple Device

STEP 7: Enter the Static IP Address Details

Type in the IP Address and Subnet Mask numbers that you wrote down in Step 6. Leave all of the values below Subnet Mask blank. Do not enter any information into these fields. When you are done, touch <Wi-Fi in the upper left corner.

Step 6 of connecting the Infinitybox inTOUCH NET Module to your Apple Device

When you have completed these steps, your Wi-Fi settings will look like this.

Step 7 of connecting the Infinitybox inTOUCH NET Module to your Apple Device

You will see a message that says that there is No Internet Connection for inTOUCH NET. Since inTOUCH NET is a local connection, there is no Internet connectivity. That is absolutely normal. You will see an exclamation mark over the Wi-Fi symbol between the lock icon and the blue information icon. This is also normal.

These simple steps will allow you to connect your iPhone or iPad with a cellular data plan to inTOUCH NET so that you can control your car and access your cellular data at the same time.

Please click on this link if you have any additional questions about these instructions.

Picture of the Gen-IV Heating & A/C Unit from Vintage Air

Vintage Air Wiring

April 17, 2017/0 Comments/in Wiring /by admin

Here’s a quick follow up blog post to the one that we just did on trinary switches for air-condition systems. A lot of guys want to know how they wire power to their Gen-IV heating & air-conditioning system from Vintage Air. This post is going to his the basics about Vintage Air wiring with our Infinitybox system.

As with any electronic system that you’re going to install in your car, carefully read and thoroughly understand the instructions before you start. Most of our customers are using the GEN-IV system from Vintage Air. You can download a quick electrical diagram for this system by clicking this link.

There are two power connections that you need to make for the GEN-IV. The first is a connection directly to the battery for constant +12-volts. This is the large-gauge red wire in their harness. It has a circuit breaker in-line to protect the wire from overloads. Per their instructions, they recommend that this red power feed gets connected directly to the battery to minimize any voltage drop.

The second connection is for the ignition power for the system. On most of their systems, this is a violet wire in their harness. This ignition feed wire gets connected to the ignition output on your POWERCELL. When the ignition is on, this wire has to have battery voltage on it to turn on the Vintage Air GEN-IV. The majority of the current required to operate the GEN-IV is coming from the direct connection to the battery. This ignition trigger wire requires very little current and can be spliced into the ignition output on the POWERCELL directly. You do not need to add a relay for this.

You can splice this violet wire directly into the POWERCELL output wire. You can also create a terminal block for your switched ignition feeds. The best option it to use our Splice Saver Kit to create a secure and sealed ignition bus.

Wiring ignition key-on power with the Infinitybox Splice Saver Kit

Lastly, you need to make sure that you have the grounds properly connected for the Vintage Air harness. In their wiring diagrams, these are the white wires.

These instructions are applicable for any version of the Infinitybox system, whether or not you’re using inTOUCH NET or inVIRONMENT.

Click here to contact our technical support team with any questions.

Trinary Switch

April 10, 2017/0 Comments/in Wiring /by admin

Okay guys, we get asked this question a lot. How do you wire a trinary switch on a Vintage Air Gen-IV with the Infinitybox system? It is a good question. We’re packing a lot into this blog post so hang on. This post is only going to cover wiring the cooling fan part of the trinary switch. The rest of the wiring is going to follow the directions given to you with the Vintage Air Kit. That being said, you must carefully read and understand all of the installation instructions that came with your heating & air-conditioning kit.

Before we get too far, it is important to understand what a trinary switch does. It is a safety switch for air-conditioning systems. It is a three-function switch (tri-nary). It automatically shuts off the power to the air-conditioning clutch if the refrigerant pressure gets too high or too low. It will also automatically turn on the engine cooling fan when the compressor is running. The Vintage Air guys have a great video featuring Rick Love talking specifics about Trinary Switches. You can see that here.

You can see a more detailed picture of the Vintage Air wiring diagram in the picture below.

Your Infinitybox system is going to control your cooling fan. There is a MASTERCELL input that connects to a thermostatic switch on your engine. When the coolant temperature exceeds a set point (usually around 180 F), this temperature switch closes and grounds the MASTERCELL input for the cooling fan. When this happens, the MASTERCELL sends a command to the front POWERCELL to turn on the cooling fan. We’ve blogged about controlling fans before. This link will take you to this blog post.

When you’re installing air-conditioning in a car, you want the cooling fan to turn on under two conditions. First, when the coolant temperature exceeds the set point of the thermostatic switch. Second, you want the cooling fan to turn on when the A/C clutch is running. Running the air-conditioning compressor increases the load on the engine. Also, you have to make sure that you have good air flow through the condenser to make sure that the refrigerant system is working efficiently and safely.

Take a close look at the wiring diagram from Vintage Air. The part of the diagram that we’re going to focus on only relates to the cooling fan wiring. You are going to wire the A/C thermostat through one set of contacts on the trinary switch to the A/C clutch. The Infinitybox system won’t get in the middle of this part of the circuit. If the refrigerant pressure gets too high or too low, it will disconnect power to the A/C clutch for safety.

The fan part of the circuit is what we are discussing. There are a pair of blue wires on the trinary switch. These are the contacts for the cooling fan. One of the blue wires connects to ground. Either of the blue wires will work for this ground connection. In the Vintage Air diagram, you will see that the blue wire on the trinary switch is used to ground switch the coil of the cooling fan relay. When the pressure of the refrigerant in the system exceeds the set point of the trinary switch it will close its contacts and connect the fan trigger to ground.

With your Infinitybox system, there are no relays. The MASTERCELL is your trigger and the POWERCELL turns on the power to the fan. The following diagram will show you how to wire the fan contacts of the trinary switch to the MASTERCELL input for the cooling fan.

Picture of wiring diagram showing how to wire a trinary switch into the cooling fan circuit with the Infinitybox system

You will note that the trinary switch is wired in parallel with the thermostatic switch installed on the engine. That way the cooling fan will turn on if either the coolant temperature is high or if the A/C compressor is running. You can splice the trinary wire anywhere into the MASTERCELL cooling fan input wire. You can splice these wires together at the MASTERCELL connector. You can splice the two wires together in the connector going onto the thermostatic switch. Electrically, they just need to be wired in parallel.

You can download a PDF copy of this wiring diagram by clicking this link. Please contact our technical support team if you have any questions about wiring your cooling fan trigger into your trinary switch.

Updated 818 Manual

April 6, 2017/0 Comments/in Wiring /by admin

Guys have been wiring their Factory Five cars since we started this business over 8 years ago. Hundreds of our kits have been used in the MK4 Roadster, the ’33 Hot Rod, the Type 65 Coupe and the GTM Supercar. When Factory Five developed their new 818 a few years ago, we worked with their beta builders to create a configuration of our 20-Circuit Kit to help guys wire this car too. In addition to a configuration specific to this car, we created a detailed set of instructions showing you how to wire all of the Subaru switches directly to our MASTERCELL inputs. We just released an updated 818 manual based on recent customer feedback.

The original configuration for the 818 was set up exclusively for 1-filament brake lights. This means that the turn signal bulbs in the rear of the car worked together as the brake lights. When you flipped on the left turn signal, the output for the left turn signal would flash. Same for the right. If you stepped on the brake pedal, both the left and right turn signals on the rear POWERCELL would come on together for the brake lights. If you have a turn signal on when you stepped on the brake pedal, that turn signal would override the brake lights on that side of the car. The configuration was set up to match the tail lights that customers got in their kits from Factory Five.

Guys have wanted more flexibility with the tail lights that they were using on the back of the 818. In some cases, they were using clusters that had separate bulbs for the brake lights. We call this multi-filament turn signals. With this update, there is a dedicated brake light output on the rear POWERCELL that can be used for these light clusters. You simply pick a different input to the MASTERCELL for the brake pedal switch. All of this is detailed in the updated 818 manual.

If you want to learn more about the differences between single and multi-filament turn signals, you can read this blog post.

You can download the updated 818 manual by clicking this link.

We also update the configuration sheets for the 818 kit. There are two versions: you can download the standard version by clicking here or you can download the version set up for the optional inRESERVE solenoid by clicking here.

If you have any questions about the updated 818 manual or any parts of our Infinitybox system, click here to contact our technical support team.

Lucas Switch

March 24, 2017/0 Comments/in Wiring /by admin

There are very few companies in the car world that get the ribbing of Lucas Industries. They are the butt of many an old car guy’s jokes about reliably, safety and burning. The company was founded in the 1860’s in the UK and produced electrical components for over 100 years for all of the popular British brands. These include MG, Austin, Cooper, Jaguar and even the ubiquitous Cobras built by Shelby. It is not uncommon to hear of them referred to as “Lucifer” because of their alleged history of causing vehicle fires. One of the benefits of our Infinitybox system is that you can use practically any switch to control things in your car. This includes a period correct Lucas switch in your restoration of a MG or a Cobra replica build. Read below how to connect the Lucas 31788 headlight switch into the inputs on your Infinitybox MASTERCELL.

Our Infinitybox system has been used to wire some of the most advanced resto-mods and Pro-Touring builds. At the same time, our customers use our system in a lot of classic restorations and component car builds. The most popular component car that we see from our customers is the MK4 Roadster from Factory Five. This is a great replica of the Cobra made famous by Carroll Shelby. A lot of guys want to build this car and customize it to make it unique to them. Other guys want to build it period correct to look like the original Cobras but with all modern systems under the skin.

We got a question this week from one of our customers building a Factory Five Cobra. He wants to use the original headlight switch from Lucas in the car and wanted to know how to wire it to the MASTERCELL inputs. He’s using the Lucas 31788 switch. That’s an easy thing to do.

One of the advantages of our system is that it takes very little current to turn on a MASTERCELL input. The actual amount is less than 1 milli-amp. (0.001 Amperes). This means that you don’t have to use high-current switches to turn your lights, fans, ignition or starter solenoid on or off. The high-current part of the circuit is managed in the POWERCELL. A lot of the alleged issues that Lucas had over the years came from too much current being pushed through their switches. Our MASTERCELL completely eliminates that.

This diagram shows you the specifics on how to wire the MASTERCELL inputs for parking lights and head lights to the Lucas switch.

Picture of Infinitybox wiring diagram showing how to control headlights and parking lights from a Lucas Switch

Terminal 4 on the switch needs to get connected to ground. If you understand how the switch works, this may seem counter-intuitive, just trust us. You can either connect this terminal directly to the chassis or use one of the black ground wires that is included in the MASTERCELL inputs harness. Using one of the dedicated ground wires is our preferred way of wiring these kinds of switches.

From there, connect the MASTERCELL input for the parking lights to terminal 7 and the input for the head lights to terminal 8. The switch is set up internally so that the parking lights will stay connected when the switch is in the headlight position.

Check the specific configuration sheet that came with your kit for the exact wire colors and connector locations for these inputs. Different configurations may have different wire colors and connector locations.

You can read these blog posts to get more details about wiring the head lights and parking lights to the POWERCELL outputs.

That’s all you need to do to wire your headlights and parking lights to this Lucas switch. When you turn on the parking lights or the headlights, the MASTERCELL will see the switch turn on and send the appropriate commands to the front & rear POWERCELLs to manage the lights.

You can download a PDF copy of this wiring diagram by clicking this link. If you have any other specific technical questions, you can contact one of our technical support engineers by clicking this link.

Digital Guard Dawg iKEY

March 6, 2017/1 Comment/in Wiring /by admin

We always say that our Infinitybox system plays nicely with any other piece of automotive electronics. We have our own remote keyless entry system with inLINK and our one-button start feature is built into all of our 10 and 20-Circuit Kits. Some of our customers like to use push-button start feature and Passive Key Less Entry (PKE) system manufactured by other companies. This post will go through the details of connecting the Digital Guard Dawg iKEY system to the Infinitybox system.

Before we go any further, you must thoroughly read and completely understand the manuals that come with your Digital Guard Dawg iKEY system. In the case of this system, there are two manuals. One for the push-button start module and one for the PKE module. This blog post is only going to describe how to connect the wires that are relevant to the Infinitybox system. Carefully follow the instructions for all of the other connections to their harnesses including power and ground.

By connecting the Digital Guard Dawg iKEY to the Infinitybox system, you get all of the advantages of Infinitybox plus the PKE features of the iKEY system. The iKEY system has several outputs that are +12 volts and ground switched. The Infinitybox MASTERCELLs work on ground signals. You will need to use our inVERT Mini‘s to connect the +12 volt outputs to the MASTERCELL inputs. Failure to do so will damage the inputs on the MASTERCELL and will void your warranty. Also, you must use a diode to isolate the ground outputs on the Digital Guard Dawg iKEY from the MASTERCELL inputs. Failure to do this could result in damage to the inputs and will void your warranty. You can use a 1N4001 diode easily sourced from any electronics store. Also note that the orientation of the diode is critical. Please pay attention to this in the wiring diagrams.

Please note that the wire colors and connector locations shown in the following diagrams may not match your system exactly. We have several different configurations. Please reference the configuration sheet that came with your kit for the exact wire colors and connector locations.

The following diagram shows you how to connect the Push-Button Start module to the MASTERCELL inputs and POWERCELL outputs of your Infinitybox system.

Picture of the wiring diagram showing the Digital Guard Dawg Push Button Start Wiring with the Infinitybox System

Here are the details:

Digital Guard Dawg has a dedicated harness with Negative Ignition Outputs designed to work with our Infinitybox system. You can use this harness to connect directly to the MASTERCELL inputs for the Ignition, Starter and Accessory. The yellow wire in their harness connects to your starter input. The green wire connects to your ignition input and their white wire connects to your accessory input.
Connect the Black wire from the accessory harness to the neutral safety or clutch interlock switch. This is the same switch used for the neutral safety input going to the MASTERCELL. Be sure to wire in the diode to isolate the MASTERCELL input from the Push-Button Start module.
Tap off of the brake light output on your rear POWERCELL and connect that to the Brown wire on your accessory harness.

This diagram will show you how to wire the PKE module to the Infinitybox system.

Picture of the wiring diagram showing the Digital Guard Dawg PKE Wiring with the Infinitybox System

Here are the details.

Connect the Brown wire on the power harness through a diode to an optional input for a trunk popper. Not all of our systems may be set up for this feature. Your system may need to be updated to add this.
Connect one of the Grey wires from the power harness to an inVERT Mini. Tap into the MASTERCELL input for the parking light and connect that to the MASTERCELL side of the inVERT Mini.
Connect the Green and Blue wires from the power harness to the optional inputs for door lock and unlock. You need to have inMOTION for this option to work. The MASTERCELL inputs must be isolated from the PKE module by diodes as shown in the drawing.
Connect the Purple wire from the power harness to your MASTERCELL input for the horn through a diode.
Connect the Green wire from the accessory harness to the pin switches on your doors. This is the same switch used for the interior lights input going to the MASTERCELL. Be sure to wire in the diode to isolate the MASTERCELL input from the Push-Button Start module.
Tap off of the brake light output on your rear POWERCELL and connect that to the Brown wire on your accessory harness.

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

If you follow these instructions, you can get the full functions of the Digital Guard Dawg iKEY system. You can pop your trunk and control your door locks from their system. You get PKE functionality from their remotes. You get their one-button start feature.

Click on this link to contact our technical support team with additional questions about connecting your Digital Guard Dawg iKEY system to our Infinitybox system.

Picture of the Infinitybox 20-Circuit Kit

Download the New Diagnostic & Troubleshooting Document

February 3, 2017/0 Comments/in Wiring /by admin

One of the most powerful features of our Infinitybox system is the diagnostic and troubleshooting capabilities that it has. You can point to exactly where problems are in your electrical system with a few presses of buttons on your MASTERCELL and a glance at the LED indicators on the POWERCELL. No scanners, tools or laptops are necessary. We just published a new diagnostic and troubleshooting document in the Resources section of our website.

This new diagnostic and troubleshooting document covers all these built-in tools. Each is shown with pictures and examples to show you what to look for on your MASTERCELL inSIGHT screen and the POWERCELL output indicator lights.

This new diagnostic and troubleshooting document shows covers these topics:

The basics of Infinitybox diagnostics
How to check the CAN cables
How to check your switches
How to check your outputs
How to read the built-in Error Log
How to use the POWERCELL over ride headers

You can get to this new Diagnostics and Troubleshooting guider under “Installation Instruction & Documentation” in the Reference section of our website. You can also download the document by clicking this link.

Our technical support team is always available via email or the phone to walk you through getting your car wired with our Infinitybox system. Click on this link to contact us for support or with questions.

Examples of three different PWM duty cycles

Pulse Width Modulation

October 13, 2016/3 Comments/in Wiring /by admin

Our Infinitybox System is far different from a traditional fuse & relay based wire harness. There are things that Infinitybox can do that you couldn’t even begin to imagine with a good-old bundle of wire. One of our biggest goals when we educate people about our products is to de-mystify some of the potentially scary terms that we use. One that we use a lot is Pulse Width Modulation or PWM. This is a fancy term for turning something on and off very fast to control power.

We don’t use relays in our POWERCELLs. Instead, we use MOSFETs. Yes, I know that is another scary term that we’ll talk about later. For now, all you need to know is that MOSFETs are solid state stitches. Unlike relays, there are no mechanical parts in them. You can turn a MOSFET on and off literally millions of times per second. You can do that with a relay 2 to 3 times per second before you have to worry about burning up the contacts.

The ability to turn a MOSFET on and off very quickly allows us to control the amount of power coming out of a POWERCELL output. We do this by using something called Pulse Width Modulation. PWM is the process of turning an output on and off quickly. The effective power coming out of the output is proportional to the amount of on time as compared to the off time. The ratio of the on time versus the off time is called the duty cycle. So for example, if we turn the output on for half of the cycle time and off for the other half, your duty cycle is 50%. The effective voltage of your output is approximately 50%. This picture shows you what we mean.

Examples of three different PWM duty cycles

The three different graphs are 10%, 50% and 90% duty cycle.

Check out this video showing you more about PWM. If you haven’t seen Colin’s Lab on You Tube before, it is a worthwhile watch. He is a geek’s geek but makes great videos explaining the basics of electronics. As part of Make Magazine, his stuff is filled with tons of useful electronics projects, tips and tricks.

So you’re asking yourself, “What does this mean to me”? “I’m wiring a car, not building circuits.” Pulse Width Modulation is a very effective and efficient way to control the brightness of lights and the speed of motors. There is very little heat lost with PWM as compared to using resistors or rheostats.

The Infinitybox system has PWM capability built into the POWERCELL outputs. We can effortlessly dim lights, create daytime running lights, theater dim interior lights, control fan speeds, and fuel pump speeds. For those who need that advanced control, it is built right into your system. No external modules or hardware are required.

Click on this link to contact one of our technical support guys to talk about your specific requirements using Pulse Width Modulation.

Atomic EFI

October 11, 2016/0 Comments/in Wiring /by admin

We’ve blogged before about how to power many different EFI systems with Infinitybox. Examples include the Ford Coyote ECU, the GM LS ECU, the Holley Dominator, the FAST EZ-EFI and many others. This post is going to cover how to wire the Atomic EFI system from MSD.

Here’s what MSD says about their Atomic EFI:

“The Atomic EFI provides the performance and driveability benefits that you expect from fuel injection. Quick starts, smooth idle and great throttle response just to name a few. Combine the fact that the Atomic will support ignition timing through the ECU and you have a win-win combination. Initial timing is handled through a compact handheld monitor where you simply answer a few car guy questions about your engine and you’re off and running!”

Just like any other EFI system, wiring it with our Infinitybox 10 or 20-Circuit Harness Kit is very easy. You get several advantages over wiring with a traditional wiring harness.

You run less wire in the car. The ECU sits behind the dash and connects to the MASTERCELL. The cooling fan and fuel pump are wired to their local POWERCELLs. You’re not running wires from the ECU all over the car.
You can eliminate the need for relays and external fuse holders. The POWERCELLs are your relays. Each output is fused inside the POWERCELL.
You get security and immobilizer functions in your Infinitybox system. You don’t have to add a separate alarm system to keep unwanted people from starting your car.
You can get cooling fan timing and delays right in the Infinitybox system. You don’t need to add separate controller modules.

Before you connect your Infinitybox system to your Atomic EFI system, you must completely understand the instructions from MSD. Click on this link to get to the manual for their Atomic EFI PN 2910 – Throttle Body Kit. This post is going to show you how to wire the key-on power to the Power Controller. It will also show you how to wire ground, constant battery power, the fuel pump trigger and the cooling fan trigger. See the MSD manual for the rest of the electrical connections to their harness.

This diagram will show you the details of wiring your MSD Atomic EFI system to your Infinitybox system.

Picture of wiring diagram showing how to wire the MSD Atomic EFI Power Module with the Infinitybox 20-Circuit Kit

To start, you need to connect constant power and ground to the MSD Power Module harness. MSD recommends connecting the large red wire directly to the battery. The ground wire should get connected to the chassis through a metal-to-metal connection.

The small red wire is the key-on power wire to the Power Module. When you key is in the on or start position, you should have battery voltage on this wire. The small red wire in the MSD harness is going to connect to the ignition output wire on your POWERCELL. Check the configuration sheet that came with your kit for the correct color and connector orientation for all of the POWERCELL connections.

There are two wires in the MSD Power Module harness for cooling fan triggers. The pink wire is the primary and the tan wire is for the secondary cooling fan. Both of these wires are intended to ground a relay coil to turn on the fan. You can connect them directly to the MASTERCELL inputs. The MASTERCELL inputs are expecting a ground trigger to turn on the inputs. You must put a diode in-line between the Power Module fan trigger wires and the MASTERCELL input wires. This should be a 1N4001 diode. The orientation of this diode is critical for this to work properly. See the diagram above for correct orientation of the diode.

Once you have the MASTERCELL input wired to the Power Module for the cooling fan trigger, you need to connect the POWERCELL output to your cooling fan. See the configuration sheet that came with your kit for the proper wire color. If you want to use a secondary cooling fan, you can use any of the OPEN outputs on your system.

There is a large orange wire on the Power Module harness for the fuel pump. This wire puts out a positive signal for the fuel pump. You will need to invert this signal to a ground signal to work properly with the MASTERCELL. You can use a relay to do this. This link will show you how. The easier way to do this is to use one of our inVERT Mini‘s.

Once you have the MASTERCELL input for the fuel pump properly connected to the MSD Power Module fuel pump output, you need to wire your POWERCELL output to your fuel pump. Again, your configuration sheet will shows which wire to use.

That’s it. All of your relays and fuses are built into the Infinitybox system. Once you follow these steps, you’re ready to power up your system and start tuning the engine.

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

Contact our technical support team with any questions related to wiring the MSD Atomic EFI system with your Infinitybox system.