The 12 volts comes from an ignition source the negative connection comes. We include instructions for a single fan and a dual fan using one or two relays in every relay kit we sell.
Hayden flex a lite or perma cool brands can provide a 12 volt output when activated.
Cooling fan relay wiring diagram. The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method. After all we want to help you get back on the road as much as you want to. Published by saum hadi.
To switch a relay on the two smaller wires make the connection from hot to ground. 87 red wire connects to the positive wire on the electric fan. It uses a 40 amp electric relay and electric fan sensor.
30 other red wire needs constant 12 volt power from the battery. 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. Relays shown in these diagrams can provide options.
Wiring diagram 2 wire heating cooling thermostat 8 s 3. View all posts by saum hadi post navigation. Open the relay box cover and locate the blower speed terminal board on the far left side.
Suggested electric fan wiring diagrams suggested primary cooling fan single speed on off using 12 volt switching devices only for primary activation note. The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan. 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. 86 gray white wire goes to the ignition switch. 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.
Cooling fan relay wiring diagram base chevy cooling fan relay wiring diagrams wiring a gm electric fan relay automotive schematic fan relay wiring diagram raw electric fan wiring diagram general helper. See the blower speed selection chart table 2 for the proper heating and cooling speeds. Even though the iso relays are rated at 20 amps for this application experience has shown a large fan motor.
Connect the blue lead marked 13 to the correct. Likes to use two relays to power up one large electric cooling fan.