1981 Chevy K20 Electrical, Lighting and Wiring Parts

Learn how to wire dual electric radiator fans. Use our dual fan wiring diagram and guide to make sure you properly wire your fans to your thermostat.

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

Learn how to hook up a 1-wire alternator on your vehicle. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project.

Check out this headlight wiring and taillight wiring diagram.

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

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

This project consists of using welding cable to relocate a battery to the trunk of a 1967 Chevelle. Learn the benefits of using welding cable over normal battery cable and how line clamps are used to secure the wire to the frame rail.

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

Little is thought of your engine’s starter until it refuses to turn your engine over at the worst possible moment. Today’s powerful mini starters can crank the biggest engines with ease. Learn how in our buyer’s guide.

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