Aftermarket Cooling Fan Relay Wiring Diagram

Likes to use two relays to power up one large electric cooling fan.

Aftermarket cooling fan relay wiring diagram.

86 gray white wire goes to the ignition switch. The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan. Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay. Hyundai wiring diagram radiator fans ricks free auto repair dual electric cooling fan faq relay kit schematic 1 12v 8 diddlhausen 659 c5 corvette resources 2002 dodge caravan library aftermarket ls1tech camaro and firebird modification volvo sd homemade circuit wo 3652 hyundai wiring diagram radiator fans ricks free auto repair wiring dual electric fans electric cooling fan faq read more.

Https amzn to 377klrp those fans fit perfect on 68 72 gm a body cars bu. 87 red wire connects to the positive wire on the electric fan. 30 other red wire needs constant 12 volt power from the battery. The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method.

Even though the iso relays are rated at 20 amps for this application experience has shown a large fan motor. 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. Just an idea on how to wire up electric cooling fans for your vehicle cooling fans. Then connect switched power usually from your ignition switch to the blue wires on both relays tab 86.

This will be the wire that connects your switch to your fan power wire. Now take the power wire from your fan and connect it to the wire that is going through the firewall. The color coded diagram below will correspond with the wires on the relay kit to help simplify the wiring process. Get the 10 gauge wire and place it through the hole in your fire wall.

You will then need switched power usually from your ignition switch wired to the blue wires on the relays. Hayden flex a lite or perma cool brands can provide a 12 volt output when activated. Electric fan relay wiring diagram wiring diagram is a simplified tolerable pictorial representation of an electrical circuit it shows the components of the circuit as simplified shapes and the capability and signal contacts between the devices. Most stand alone adjustable thermostats i e.

It uses a 40 amp electric relay and electric fan sensor. Relays shown in these diagrams can provide options. 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.