Muscle & Classic Car Engine Wiring Harnesses

Wiring of your race car or hot rod can be completed at home with these helpful automotive 12 V wiring tips.

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!

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

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.

Small block Chevy V8 or the modern LS V8? Which one comes out on top as the best engine to swap into your ride?

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

Fuel injection is here to stay and we delve into the benefits of such retrofit systems for your classic muscle car or street rod in our EFI retrofit buyer's guide!

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

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

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