How To Wire Automotive Electric Fan 87 (red wire) connects to the positive wire on the electric fan. 30 (other red wire) needs constant 12 volt power from the battery. 86 (gray white wire) goes to the ignition switch. With dual cooling fans, there are two methods for wiring up the relay kit. this is based on the draw from the fans, if the fans are larger and draw more than 15 amps each, it's recommended to install a second relay kit as shown below. for smaller fans, both fans can be connected to a single relay as shown above, and the proper fuse should be.
How To Wire A Automotive Electric Fan How to wire an electric radiator fan relay temp sensor. A trinary switch will allow your electric fan to turn on and off based on either engine temperature or ac system demand. keep your engine and yourself cool b. 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. How to wire a electric fan in a vehicle to a toggle switch. easy fast and simple. use shrink tube and electrical tape along with good wire and connections st.
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