TCI Automotive Wiring Harness and Components

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

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

Selecting the right battery cable wire size for automotive alternator to battery applications is crucial for optimal electrical performance and preventing potential issues. Our guide helps you choose the right wire gauge for any length of wire run.

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

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!

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.

Unbox our most popular wiring harness with Tim.

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.

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

How does a cooling system work? Why is your engine overheating? What parts should you be giving your attention to? This guide answers all your questions.