LS7 Archives - Infinitybox

Here’s another great example of a customer’s car wired with our Infinitybox system. This is a highly customized 1971 DeTomaso Pantera built by Dave A, the cars owner. The finished product is beautiful. The stance is aggressive, the color pops and there are custom details all over the car. All of the pictures in this post were shot by Jason Peacott of Jason Peacott Photography. You can click here to get to Jason’s website to see his other work.

Low Front View of 1971 Pantera Wired with the Infinitybox System

Dave started with a rusted-out, narrow body Pantera. All the rot was repaired and then the car was treated to a Group 4 race prep, including seam welding and doublers. A fully integrated cage was then added, which is stitch welded to the chassis. The all-steel exterior is a stylized Group 4 tribute. It was completely shaved and the engine bay & underbody feature all custom metal work.

Front 3/4 View of 1971 Pantera Wired with the Infinitybox System

Dave’s running a race-built LS7 engine, mated to a built G96.50 transmission, breathing through a custom Harrop ITB intake system and 8-into-1 exhaust. The exhaust work alone is worth the price of admission.

Amazing Exhaust Work on 1971 Pantera

The car features a completely custom interior with special lighting and many one-off parts.

Interior of 1971 Pantera Wired with the Infinitybox System

Dave wired the car with our 20-Circuit Kit and inLINK. The wiring is super clean and practically invisible. The distributed design of our Infinitybox system let Dave put the MASTERCELL and POWERCELLs where he needed them to keep the wiring simple and clean.

Dave has hidden switches on the outside of the car to control his door poppers. We custom programmed his poppers so they work from his inLINK fobs. We also programmed the system so that the poppers are disabled when he locks the system from his key fob. This is a simple but powerful security feature that you can get with your Infinitybox system.

This car was proudly built by Dave with help with a few specialty shops for some of the details. This includes White Post Restorations who did paint and final assembly.

If you want to learn more about how our Infinitybox system can help you wire your next project, click on this link to connect to our technical support team.

Rear View of 1971 Pantera Wired with the Infinitybox System

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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