How to ground transmission controller when using it with Holley Sniper, Pro-Flow 4, FiTech Throttle Body EFI? (US SHIFT Throttle Position Sensor Adapter Installation Guide)

Answer

manuals.plus

Feb 18, 2025 - 03:08 AM

Proper grounding is crucial when using the US SHIFT 4L60E Throttle Position Sensor Adapter with these EFI systems. Here are the steps to properly ground the Quick transmission controller:

1. Holley Sniper:
- Connect both black ground wires from the Quick controller to the black "Battery Negative" (pin G) wire of the Sniper's wiring harness, as close to the 7-pin "Main Harness" connector as possible.
- If the connection point is more than a few feet from the battery negative terminal, use a 10AWG wire to connect this point to the battery negative terminal.

2. FiTech Throttle Body Systems:
- Both black ground wires from the Quick controller should connect to a large ring terminal placed under one of the nuts or bolts attaching the throttle body to the intake manifold.
- This is necessary because the FiTech ECU is grounded directly to the throttle body casting.
- It is recommended to solder all connections and cover them with sealed (double-wall) heat shrink tubing.

3. Edelbrock Pro-Flow 4:
- Connect both black ground wires from the Quick controller to the black "Battery Ground" wire of the Edelbrock main wiring harness, as close to the ECU main connector as possible.
- If the connection point is more than a few feet from the battery negative terminal, use a 10AWG wire to connect this point to the battery negative terminal.

Properly grounding the Quick transmission controller ensures that both systems share the same ground potential, allowing for trouble-free operation and stable TPS signals.