Quick Start Guide - Side B (Elite 550 / 750)

Elite Series Firmware Help › Elite Series ECU Information › Elite 550 / 750Updated Sep 2026

Haltech's quick start guide for the Elite 550 and 750 is a two-sided sheet. Side B is the reference you keep beside the car during install. Here's what it's for and how we use it.

What it's for

The Elite 550 and 750 quick start guide is a double-sided reference sheet. Side A and Side B together give you the key information to get the ECU wired and running without digging through the full manual.

When you need it

Keep it at hand while you're wiring an Elite 550 or Elite 750, and again at first start. It's quicker than switching between screens when you're under the dash.

What to check

  • Your wiring matches the ECU model. The 550 and 750 are similar but not identical, so check against the Elite 550 pinout or Elite 750 pinout.
  • Power, grounds and the main relay are correct before you connect sensors.
  • Your harness diagram matches what's in the car, basic or premium.

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