Christian picked up a Painless Performance electric fan relay kit with a thermostatic ... find the fan manufacturer's supplied wiring diagram. If you're still not sure, once you've completed ...

A relay is used to activate a high-amp accessory with a low-amp switch. An accessory like an electric fan or electric fuel pump requires significant amperage. Sending that amperage through a ...

and turn on a power-hungry device like an electric fan. Most relays are of the four-prong, single-pole-single-throw (SPST) variety, and have the following four DIN-standard terminal numbers ...