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, ...

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, ...

Editor's note: This article was originally published Jan. 27, 2017. Some of the information may no longer be relevant, so please use it at your discretion. Wiring diagrams and road maps have much in ...

Example of a wiring diagram for a PC fan with three wires: If there are four wires, wire the control wire to the PWM instead (leaving the fan power tied to the voltage rail) (untested). If you only ...