21 Circuit Wiring Harnes

The Painless Performance 10104 is a 21-circuit customizable pickup chassis wiring harness designed for key-in-dash set-ups and carbureted or stand-alone fuel-injected trucks. It features blade and maxi fuse types and includes ample wire lengths suitable for long beds and extended cabs. This harness replaces broken or corroded wiring, restoring an organized modern wiring setup.

The harness is custom-printed with circuit identification and uses GM-based color codes. It includes a GM-engineered fuse block with a Painless mounting bracket, GM turn signal connectors, and pre-wire plugs for headlights and the dimmer switch. It also comes with 12 fuses and a horn relay.