1966 Cadillac DeVille Wiring Harness and Components

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.

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.

This Dakota Digital Instrument Cluster, modeled after a factory SS dash, is a must for your Classic car or Muscle car. Check out this article to learn about the unique features and how it requires only one cable to plug in for install!

Follow along as Jeff installs Mr. Gasket aluminum finned valve covers and gaskets to his iron-head engine. Learn how to prep the covers for a fresh coat of engine paint!

Check out this headlight wiring and taillight wiring diagram.

With the new housing and brakes installed, Jeff chooses new wheels and tires for his 1967 Chevelle. See how he gets the perfect fit with enough clearance for brakes, coilovers and even 15" wheels.

Learn how to equip your car with A/C by installing the Vintage Air GenIV SureFit Complete Kit. Jeff installs this kit in his 1967 Chevelle while making some vent modifications to enhance the look and direct air better.

After installing front brakes, Jeff is now ready for wheels and tires. See how a spacer is used to make his 15" wheels fit just right and a slick way to speed up the sanding and polishing process of the wheel dust caps.

Sometimes, a simple paint job can cause a project to spiral out of control. In the case of Steve's '66 Chevelle, it came out way better than anyone expected.