International Chassis 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.

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

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!

Learn the importance of proper electrical grounding and how it affects not only starting, but accessories and lighting as well.

Unbox our most popular wiring harness with Tim.

Crimping or soldering automotive wiring are both viable options, but in some cases, it is preferable to do one vs the other

Learn how Derek Turner's '55 Chevy gets completely overhauled with brand new chassis and suspension components along with a new fuel system and wiring.

Speedway Motors just added some exciting new options to our line of racing harnesses.

Learn about performing an LS Swap in a 1972 Chevelle in this tech article. We'll discuss lessons learned from our Chevelle engine swap using a 500-horse 6.0.

Learn how to install and wire a digital tachometer. Speedway Motors covers the entire process with our installation of the Acewell 1100 Digital Tachometer.