We show you how to wire in an electric fan relay kit with a thermostatic switch. If you've got an electric cooling fan on your classic car or hot rod and you want to know how to wire it with a relay, ...

A critical component of your engine's support accessories is the cooling system. Gone are the days of a manual belt-driven radiator cooling fan as we have ushered in the more powerful electric fan.

Not long after I began contributing to Hagerty eight years ago, I wrote a detailed four-part piece on electrical relays and how they work in cars. You can still find the articles here (Part I: Why We ...

An electrical relay is a type of heavy-duty, remote-control switch able to handle high-current accessories, yet capable of being actuated by substantially less current. Relays install between the ...

How to Wire an Electric Fan with Relay We show you how to wire an electric fan with a tempurature controlled relay on your classic car or hot rod.