GMC K25/K2500 Pickup Ignition 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.

Learn about the wiring of GM HEI Ignition Distributors with our diagrams and guide. Ensure you are getting the best performance out of your ignition system.

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

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

Instructions on how to install a PerTronix Ignitor Kit in an old flathead distributor for a flathead V8.

In this Tech Tip, John offers up a couple solutions to a customer wanting the best electric option to fuel his project.

Learn how to install a side detent shifter in a 1969 Chevy C10.