Locate the primary harness connector beneath the driver-side rear quarter panel to begin troubleshooting or replacement. Pinout follows a standard 5-wire configuration: ground (black), brake (red), left-turn (yellow), right-turn (dark green), and running (brown). Verify continuity with a multimeter before splicing–voltage should read 12V on all active circuits when tested against chassis ground.

Locate the engine compartment wiring harness beneath the fuse box cover–it connects directly to the ECU via a 24-pin tan/black bundle. Trace the ignition coil wires (orange/stripe) to cylinders 1-6, matching firing order 1-2-3-4-5-6; misrouting causes immediate misfiring. The throttle body plug (dark gray, 6-way) carries sensor signals–verify pinouts before disconnecting to prevent error codes […]