The fan or furnace blower motor is controlled by the two left connections (green dots); the furnace limit switch which will turnoff the burner if the temperature limit is reached is controlled by the two right connections (red dots). Step 2. The best way to test it is to bypass the fan's normal circuit and straight wire the fan to the engine. so in effect you have reduced the cooling capacity of your cooling system straight away. arrow on the fan blade and when wiring, ensure the fan rotates in the direction of the arrow in all cases. Orange – This wire connects to your heat pump (if you have one). Now take the power wire from your fan and connect it to the wire … The blue wire on the thermostat is the Common or “C” wire. The issue I've got (comes up at the drags alot) is shut the car off when still hot. 16-18 ga: all others. recommended wire sizes: 8-10 ga: fan power and ground. Blue. White – The white wire is what connects to the (auxiliary) heat on your system. Go to refire car when it's still got and fans kick in straight away before car has a … Any ways looking for ideas on how to wire it into the car. The Rc wire connects to the cooling system. I'm not going ot use the davies craig ones in the hose, ive got one welded into the top tank already. 12v switched wire to green wire at a/c clutch. Locate the positive and negative wires on the cooling fan. The green wire connects to the fan. Green – The green wire connects to the fan. I have found a few ideas and some must … wiring up thermo fan spdt relay - Hey Guys,I have been having issues wiring this thermo fan up.The LED light on the Fuse is always on when the ignition is off.The LED light goes off when the car is turned on.The LED comes on when the thermo switch hits its open ground (90degrees)The fan does not run Red (H). Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires. Get the 10 gauge wire and place it through the hole in your fire wall. optional 2nd relay overrides temp switch and turns on fan when a/c is turned on fan adjustable fan All u do is cut ur cable for thermo, wire ur ground to body then run a wire from the thermo positive thru ur switch then thru a fuse then to the batt. So now we have a wire that goes through the engine bay to the cabin of your car! Red – Now, there can be two separate wires for this. Pics of : How To Wire Up Thermo Fan Relay. Yellow – The yellow wire connects to your compressor. as the amount of radiator the electric thermo fan draws air through will be less than what the mechanical fan with a shroud would have done. Hey guys i have a thermo fan to setup on my corolla and have a thermatic switch i grabbed from an ae82 i think its on at 90 off 85, cant remember. Step 1. 2. Direct power from the back of the altenator to the fans. -ve wire to a relay. What gauge wire are you using for wiring up the fans? Red (C). I'm going to get my finger out and wire up my thermo fans with an auto switch in the top tank. sim_rx3 wrote:ok first of all banging a thermo fan up to a radiator isnt the right thing to do. This wire connects to your heat pump (if applicable). This wire may be red without an “H” attached, in some cases. u can just wire it up straight to the batt if u dont know how to wire into the ignition. If you are having your fan … Wiring Dual Electric Fans How To Properly Wire Electric Cooling Fans Wiring Thermo Fan Off Thermatic Switch Car Electrical Cb 9260 Fan Relay Wiring Diagram Dual Electric READ Honey Bbq Wings Pizza Hut Calories. Orange. note: or in an ’84 to ‘89 240 you may use the a/c power ‘on’ wire: red/white wire at ac switch microswitch in dash. 1. The Rh wire connects to the heating system. Optimum Thermatic Fan p (forced air erformance flow) will be achieved by mounting the fan directly to the surface of the respective condenser and radiator core. 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