1987 GMC G3500 Electrical, Lighting and Wiring Parts

Check out this headlight wiring and taillight wiring diagram.

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.

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Learn how to swap out an LS engine with a modern fuel injected engine into a hot rod for added horsepower, fuel economy, or throttle response. View a list of parts and helpful tips to complete the installation.