How To Properly Wire Electric Cooling Fans Learn how to properly wire single or dual electric cooling fans using a relay kit and a temperature sender. see diagrams, video and tips for high horsepower applications. How to wire an electric fan with a relay on a classic car.
How To Wire Auto Electric Cooling Fan Learn how to wire a standard electric fan with a diagram that shows the power supply, ground, and control switch connections. find out the basic components of an electric fan and the different types of wiring diagrams for various fan functions. How to wire dual electric cooling fans. 30: constant 12v, unswitched 85: signal (switched 12v) 86: ground (completes circuit) 87: consumer (fan) 12v 87b: extra consumer (same as 87) 12v switched wire. may be green wire at a c clutch. note: or in an ’84 to ‘89 240 you may use the a c power ‘on’ wire: red white wire at ac switch microswitch in dash. The cooling fan wiring diagram below is what we’ve found to be the simplest and most reliable method. it uses a 40 amp electric relay and electric fan sensor. start your wiring project by taking both of the positive wires from the fans and run them to the yellow wires on each relay (tab 87).
Wiring Diagram Electric Fan 30: constant 12v, unswitched 85: signal (switched 12v) 86: ground (completes circuit) 87: consumer (fan) 12v 87b: extra consumer (same as 87) 12v switched wire. may be green wire at a c clutch. note: or in an ’84 to ‘89 240 you may use the a c power ‘on’ wire: red white wire at ac switch microswitch in dash. The cooling fan wiring diagram below is what we’ve found to be the simplest and most reliable method. it uses a 40 amp electric relay and electric fan sensor. start your wiring project by taking both of the positive wires from the fans and run them to the yellow wires on each relay (tab 87). How to wire an electric radiator fan relay temp sensor. Wire the relay to the power source: connect the relay’s positive wire to the power source, usually the positive terminal of the battery. connect the relay’s negative wire to a suitable ground connection. test the fan: after completing the wiring process, test the electric cooling fan to ensure proper functionality.
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