Aftermarket Cooling Fan Relay Wiring Diagram

Or a single relay could be used to control both fans.

Aftermarket cooling fan relay wiring diagram.

Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay. Get the 10 gauge wire and place it through the hole in your fire wall. 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. So now we have a wire that goes through the engine bay to the cabin of your car.

This will be the wire that connects your switch to your fan power wire. Most stand alone adjustable thermostats i e. Now take the power wire from your fan and connect it to the wire that is going through the firewall. The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan.

Then connect switched power usually from your ignition switch to the blue wires on both relays tab 86. 86 gray white wire goes to the ignition switch. Likes to use two relays to power up one large electric cooling fan. You will then need switched power usually from your ignition switch wired to the blue wires on the relays.

Https amzn to 377klrp those fans fit perfect on 68 72 gm a body cars bu. 30 other red wire needs constant 12 volt power from the battery. Even though the iso relays are rated at 20 amps for this application experience has shown a large fan motor. Relays shown in these diagrams can provide options.

It uses a 40 amp electric relay and electric fan sensor. 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. Hayden flex a lite or perma cool brands can provide a 12 volt output when activated. 87 red wire connects to the positive wire on the electric fan.

The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method. Just an idea on how to wire up electric cooling fans for your vehicle cooling fans. Suggested electric fan wiring diagrams suggested primary cooling fan single speed on off using 12 volt switching devices only for primary activation note.