What this diagram shows
The 26-pin pinout maps every terminal on one of the two connectors on the Elite Race Expansion Module. It tells you which pin carries which input, output, supply or ground, so the REM talks to your sensors, injectors and the Elite correctly.
When you need it
- Building your own REM loom rather than using a ready-made harness.
- Adding sensors or outputs to spare REM channels.
- Tracing a fault on an existing install.
What to check
- Confirm whether the drawing shows the pin side or the wire side before you start pinning.
- Wire any system-controlled REM channels (sync inputs, watchdog, injection relay control) exactly as shown, since they can't be reassigned in software.
- Confirm the pin assignments match what you've set up in ESP.
Need this diagram? Ask us and we'll send it over with advice for your build. For a plug-in solution, see the Elite 2500 + REM 16-injector wire-in harness, and the companion 34-pin REM pinout.
