1981 Cadillac DeVille Engine Wiring Harnesses

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.

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

Watch our Steering Column Wiring Guide video for useful tips on wiring your new steering column for your vehicle. Ididit takes you through the wiring process.

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.

Check out this headlight wiring and taillight wiring diagram.

Learn the installation process of a drive shaft loop kit in a 1967 Chevelle. NHRA requires a driveshaft loop if you're going to run slicks on the drag strip!

In this Tech Tip, John makes a few suggestions for a customer looking to update the braking system on his ’51 Deluxe.

In this Tech Tip, John answers a customer question about finding the right axle length for his 1931 Model A.