Cooling Fan Relay Wiring

To switch a relay on the two smaller wires make the connection from hot to ground.

Cooling fan relay wiring.

The 12 volts comes from an ignition source the negative connection comes from the temperature sender which is designed to switch on at 185 degrees. Electric fan relay wiring kit schematic diagram 1 dual fans wire a3 hyundai radiator ricks free auto repair cooling faq gm trusted nissan altima gone balmoond19 volvo 850 engine volvotips ot 0845 sd thermostat 100s 81h bury seclon de. A relay kit our part number ccfkrl will include everything you need to properly wire up your electric cooling fans with the exception of additional wiring needed to complete all of the circuits. A second terminal becomes hot only when the key is on.

The relay has four terminals one that is hot all the time even with the key off. The positive wire coming from the electric fan will connect to one of two red wires on your relay while the negative wire needs to go to ground. You could use one relay. When the correct parameters are met a temperature switch or the computer will activate the relay which will allow power to the fans.

Install a 10 gauge wire to the battery positive terminal with the use of a round electrical connector. Find a spot to secure the relay with a screw or a bolt. A radiator fan requires an average of 15 amps to operate. By admin october 22 2017.

See all 8 photos. Remove the nut on the battery terminal and put the wire connector over the bolt and tighten the nut. Locate the relay in immediate proximity to the fan being used. Primary cooling fan dual fans with dual relays single speed on off using ground switched devices only for primary activation using dual relays for two fans is not required.

The relay will usually be activated once it is detected that the vehicle s temperature approaches excessively high temperatures. It shows the components of the circuit as simplified shapes and the capability and signal contacts between the devices. Wiring diagram for cooling fan relay. Electric fan relay wiring diagram wiring diagram is a simplified tolerable pictorial representation of an electrical circuit.

And if a relay fails you will still have one fan running. The fan uses a relay in the fuse relay box under the hood. Diy relay easy step by step electrical wiring fan example how to wire a relay how to wire a fan how to wire fog lamp how to wire a fuel pump relay variou.