Elite 2500 Premium Universal Harness - 34 Pin

Elite Series Firmware Help › Elite Series ECU Information › Elite 1500 / 2500Updated Sep 2026

The Elite 2500 has two main connectors. This diagram covers the 34 pin side as it comes on the premium universal wire-in harness.

This is the wiring diagram for the 34 pin connector on the Elite 2500 premium universal wire-in harness, shipped in the Elite 2500 premium harness kit and sold on its own as the Elite 2500 & 2500 T premium universal harness and the 3m (9.8 ft) version. It shows which ECU pin each wire lands on and what each wire does.

You'll need it when you connect the flying leads to your engine sensors and outputs, and again when fault finding. Before you wire anything, check that it matches your harness (the full-length and short versions differ), confirm each wire's color and function against the diagram rather than guessing, and label wires as you go. The other connector is covered in the 26 pin diagram, and the short harness version has its own page.

Need this diagram? Ask us and we'll send it over with advice for your build.