Wiring Harnesses

Find engine wiring harnesses, ECU adapter harnesses and sensor cables for your automotive build. Start with the exact ECU model, engine and vehicle configuration; a similar connector or product name does not establish compatibility.

Choose the harness for your setup

  • Match the ECU family and connector layout to the manufacturer's harness specification.
  • Check the listed engine, chassis, model year and transmission, including any engine swap or changed sensors.
  • Confirm whether the listing is a main engine harness, adapter or subharness, and which wiring and components are included.
  • Review installation instructions, pin assignments and required supporting components before ordering.

Build your engine-management system

Shop Link ECU engine management · Browse ECUs, wiring and electronics · Shop by vehicle

These paths help you find related components. Confirm compatibility for each part before adding it to your build, and review the product's current availability and order terms.