Relays shown in these diagrams can provide options. It reveals the parts of the circuit as streamlined shapes and the power as well as signal connections between the devices.
Bimmerforums The Ultimate Bmw Forum
Cooling fan relay wiring diagram. Here youll also be exposed to the current path voltage and sensor signal. How to wire a relay for a radiator fan by don bowman. Testing low and high speed cooling fan relays. The 12 volts comes from an ignition source the negative connection comes. The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan. Hayden flex a lite or perma cool brands can provide a 12 volt output when activated.
If the fan is not turning in the right direction air will be blown away from the radiator and will not help to. When installing an auxiliary fan or simply wiring the factory fan so that the driver can manually turn the fan on and off make sure the fan is turning in the right direction. To switch a relay on the two smaller wires make the connection from hot to ground. The color coded diagram below will correspond with the wires on the relay kit to help simplify the wiring process. Variety of hvac fan relay wiring diagram. Get the 10 gauge wire and place it through the hole in your fire wall.
Next splice together both black wires. After all we want to help you get back on the road as much as you want to. So now we have a wire that goes through the engine bay to the cabin of your car. We include instructions for a single fan and a dual fan using one or two relays in every relay kit we sell. Cooling fans are now controlled by the ecm through the respective module network and using duty cycle control signals. 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.
Now take the power wire from your fan and connect it to the wire that is going through the firewall. It uses a 40 amp electric relay and electric fan sensor. A wiring diagram is a simplified standard photographic depiction of an electrical circuit. Most stand alone adjustable thermostats ie. Suggested electric fan wiring diagrams suggested primary cooling fan single speed onoff using 12 volt switching devices only for primary activation note. Or a single relay could be used to control both fans.
Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay. Then connect switched power usually from your ignition switch to the blue wires on both relays tab 86. The cooling fan wiring diagram below is what weve found to be the simplest and most reliable method. This will be the wire that connects your switch to your fan power wire. 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. You will then need switched power usually from your ignition switch wired to the blue wires on the relays.
Gallery of Cooling Fan Relay Wiring Diagram
