1978 GMC C25 Electrical, Lighting and Wiring Parts

Check out this headlight wiring and taillight wiring diagram.

Watch our Steering Column Wiring Guide video for useful tips on wiring your new steering column for your vehicle. Ididit takes you through the wiring process.

Are your gauges reading erratically or does your car run out of power at high rpm? It may be the cause of a bad ground. Speedway Motors can show you how to diagnose and fix the problem in no time at all!

In this Tech Tip, a returning customer asks for advice on wiring harnesses for his ’29 Ford roadster project.

Learn how to install 1970-73 RS Camaro reproduction parking lamps and how to overcome some obstacles during the installation.