The Haltech Elite 1500 connects to the vehicle through two main connectors, one with 34 pins and one with 26. This page covers the 26-pin connector. Its pinout diagram shows what each pin position on that plug is used for.
You'll need it when you're building a harness from scratch, adding a sensor or output to a spare pin, moving a wire during a custom install, or tracing a fault with a meter. It's also the reference to check against if something is plugged into the wrong input.
What to check:
- You're reading the diagram from the correct side. Wire side and pin side views are mirror images, so confirm which one you're looking at.
- The pin function matches what ESP expects for that input or output.
- Each wire in your harness lands where the diagram says it should, especially on older or modified looms.
- Terminals are fully seated and locked. Use the Elite 1500 plug and pin set and a proper tool if you're repinning.
For the other connector, see the 34-pin Elite 1500 page, or the Elite 1500 overview.
Need this diagram? Ask us and we'll send it over with advice for your build.
