Electric Fan Temperature Switch Wiring Diagram

Nothing here should be confused with the latest generation of pwm variable speed controllers which have much higher technology such as a soft start feature and smooth ramping but not necessarily better. The switch turns on at 203 degrees fahrenheit. Heres some similar controllers.

Temperature Controlled Fan Circuit Diagram Con Imagenes

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Keep your engine and yourself cool by wiring a switch into your american.

Electric fan temperature switch wiring diagram. This video shows how an normally open cooling fan switch works. The switches came off my honda. This one is a schurz. Filmed this while filming my last vlog and wanted to do a dedicated diy on how to wire an electronic fan controller.

I also show how i tested my cooling fan switches. A radiator fan switch can be a great tool when youre running your car hard either on the street or the track. Any car with an electric radiator fan can be setup to use a manual fan switch. A couple of decades ago it was popular to simply add a switch under the dash to control an electric cooling fan often referred to as an auxiliary fan.

This was a mediocre way of doing things primarily because the current required to spin the fan was drawn through the switch itself. A trinary switch will allow your electric fan to turn on and off based on either engine temperature or ac system demand. In electrical terms thats a no no. Suggested electric fan wiring diagrams converting a 12 volt switch into a ground switch these diagrams show the use of relays onoff sensors onoff switches and onoff fan controllers.

You should never rely on a switch on the dash to handle the kind of current required to power an accessory that is more than 10 15 amps.