Electric Cooling Fan Relay Wiring

The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan.

Electric cooling fan relay wiring.

Cut another piece of the 10 gauge wire long enough to go to the fan. You could use one relay. It uses a 40 amp electric relay and electric fan sensor. 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.

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. Electric fan relay wiring diagram wiring diagram is a simplified tolerable pictorial representation of an electrical circuit. 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. Finally run a fused constant power to both of the red wires on the relays tab 30.

See all 8 photos. It shows the components of the circuit as simplified shapes and the capability and signal contacts between the devices. Use a blade terminal for the relay and a barrel connector for the fan. Then connect switched power usually from your ignition switch to the blue wires on both relays tab 86.

Next splice together both black wires from the relays tab 85 and connect them to the thermostat switch. Use a female terminal on the other end and attach it to the switch terminal of the relay. However two relays will divide the load.