GMC 3500 Headlight Wiring Harnesses

A guide on how to install a universal wiring harness in a car. Read tips on properly wiring taillights, headlights, gauges, ignition switch, steering column and more.

Wiring of your race car or hot rod can be completed at home with these helpful automotive 12 V wiring tips.

Speedway Motors and Classic Trucks called on Painless Wiring to power their ground up rebuild of a 1952 Chevy truck that was built in celebration of Speedway Motors’ 65th anniversary.

Check out this headlight wiring and taillight wiring diagram.

Learn about the Speedway Motors Universal 22 Circuit Wiring Harness and the features that made it perfect for our 1967 Chevy II Nova Gasser Build.

In this Tech Tip, John answers a customer question about the Speedway 12 Circuit Wiring Harness.

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

Unbox our most popular wiring harness with Tim.

Electrical wiring is one of those tasks that enthusiasts dread tackling on their own. We're here to tell you that wiring your project vehicle is something you can do with a little help from your friends at Speedway Motors!

Day Four of the Speedway Motors Week to Wicked 1952 Chevy build starts off with a whole lot of wiring.