77-84 GM C-Body Pontiac 400 Electrical, Lighting and Wiring Parts

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

GM’s 10-bolt rear axle has been around since the 1960s, here’s how to determine if your junkyard find is worth taking home

Learn about GM alternator identification in our guide. We cover GM 3 wire alternators, 1 wire alternators, and externally regulated so you know what to choose.

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.

Need a little help Identifying GM Body Styles 1964-1972? Click Here!

Wiring a car may seem like a daunting process, but Jess explains the steps to successfully wire the ignition switch, headlight switch, and the dash gauges.

Speedway Motors employee Jess M. talks about the custom battery tray and cables she built for her '33 Ford.

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!