How do you hotwire a cooling fan?
Connect one end of the 12-gauge jumper wire to the black ground wire of the fan. Connect the other end of that wire to the engine block or any metal part of the car body. Take the second jumper wire and connect one end of the jumper wire to the positive wire from the fan.
Can I hardwire my radiator fan?
A radiator fan requires an average of 15 amps to operate. You need to hard wire the radiator fan to a toggle switch on the dash in such a manner that the fan will shut off when the ignition key is off. The fan can also be turned off manually when cruising to extend the life of the fan.
How to straight wire a cooling fan to an engine?
The best way to test it is to bypass the fan’s normal circuit and straight wire the fan to the engine. Locate the positive and negative wires on the cooling fan. Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires. Connect one end of the 12-gauge jumper wire to the black ground wire of the fan.
How do you add a toggle switch to a radiator fan?
Slide heat shrink over them and use the heat gun over the heat shrinks. Use a power drill to make holes at a location that you think is suitable for the switch. Now manually screw in a toggle switch. Attach the electrical connectors to the switch. Now test the switch by reconnecting the battery.
How do you connect a fan wire to a switch?
Connect the fan wire to two diagonal connectors of switch (on right side at top and left side at bottom). Connect the other wire coming from original cut to one of the center terminals of switch. Connect the new fused wire to other center terminal.
How does an ON / OFF switch for an auto cool fan work?
Plug the connectors to the corresponding tabs on the switch. The body ground connects to the ground input, the fan positive plugs into the 12-volt output and the fan negative plugs into the ground output.