GMC Painless Wiring EFI Engine Harnesses Parts

Read how to wire a lightning sprint engine. This detailed account of how to successfully wire an engine will ensure a smooth installation.

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

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.

Unbox our most popular wiring harness with Tim.

Speedway Tech Steve L. talks about the sometimes aggravating task of headliner installs, and offers a solution to remove some of that frustration.

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

Pat talks about our Tanks Inc. EFI fuel tanks.

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.