The Elite 750 Premium Universal Wire-in Harness comes with the ECU connectors already terminated, and flying leads at the other end for you to connect to injectors, coils, sensors and power. The wiring diagram shows where every one of those wires goes. It's also included with the Elite 750 + Premium Universal Wire-in Harness Kit.
When you need it
- Planning a new wire-in install before you cut anything.
- Assigning spare inputs and outputs for boost, fans, pumps and sensors.
- Tracing a fault on an existing install.
What to check
- Every power and ground wire is connected, and high-current loads run through relays.
- Sensor grounds go to signal ground, not the chassis.
- Your wiring matches the Elite 750 complete pinout and the I/O assignments in ESP.
If you have the basic harness instead, see the basic harness diagram. First power-up steps are in the quick start guide.
Need this diagram? Ask us and we'll send it over with advice for your build.
