Modified 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 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.

Modern hot rodding often blends classic looks with modern tech. Integrating current tech in custom cars can face issues like radio noise and erratic gauges due to EMI. This guide helps diagnose and repair common EMI causes.

Are you a collector of automotive signs? This is a DIY project where you will learn how to convert a hardwired sign to a plug in. Jess M. explains each step to get the job done!

Check out this headlight wiring and taillight wiring diagram.

There is a lot to consider when choosing the proper spark plug for your engine's intended application and power level. Let us take some of the guesswork out with our spark plug buyer's guide.

Why convert to an LED-style headlight or taillight system? Click here to find out how to do it the easy way!

Electrical wiring is one of those tasks that enthusiasts dread tackling on their own. We're here to tell you that wiring your project vehicle is something you can do with a little help from your friends at Speedway Motors!

Testing a 2 or 3 wire speed sensor sounds difficult, but these videos show that it actually is quite easy!

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.