The color coded diagram below will correspond with the wires on the relay kit to help simplify the wiring process. Cooling fans are now controlled by the ecm through the respective module network and using duty cycle control signals.
Fitting Electric Fan E30 Zone Wiki
Radiator fan switch wiring diagram. Connecting a single cooling fan is a rather straightforward system it relies on a separate temperature sender to switch the fan on or you can utilize the cooling fan output if youve installed an aftermarket efi conversion. Get the 10 gauge wire and place it through the hole in your fire wall. Here youll also be exposed to the current path voltage and sensor signal. Step 1 wiring. With the help of a wire cutter cut the wire at a distance of twelve inches from the start point. Now take the power wire from your fan and connect it to the wire that is going through the firewall.
Suggested electric fan wiring diagrams converting a 12 volt switch into a ground switch these diagrams show the use of relays onoff sensors onoff switches and onoff fan controllers. This will be the wire that connects your switch to your fan power wire. Adjustable fan switch with radiator probe ground switching non variable speed only 30 40 amp fan 1 fan 2 hayden 3653 pn. So now we have a wire that goes through the engine bay to the cabin of your car. You will then need switched power usually from your ignition switch wired to the blue wires on the relays. Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay.
Now find the wire that is connected to the motor of the electric fan. The first step in adding a switch to a radiator fan is to disconnect the batterys negative terminal. In5408 make sure the diode band.
Gallery of Radiator Fan Switch Wiring Diagram
