Just splice into this wire and run thru a switch to ground. 3652). There is a blue wire connected to the oil thermosensor at the rear of the motor. Also very convenient to simply flip a switch to verify that the fan is working. Looking at the diagram: The relays are controlled by switched grounds at the PCM, behind the right side of dash near base of A-pillar. Make sure you get the right green wire and go make it happen. Fan turn-on at 185° and off at 170°. 4028). Grounds terminating at the inner fender. Edit, Yes you can, just wire the fan, ground the ground wire,and run the positive to the fuse box to an accessory fuse that only comes on when the key is on. If so do you know if they come in different temperature turn-on specifications? Pre-wired connector plugs into fan connector and the red wire is routed to the relay via an inline crimp connector. Hayden makes a fan turn-on relay (part no. Wiring Diagram. Fan turn-on at 200°, off at 185°. It's as if the toggle switch isn't there. It uses a 40-Amp Electric Relay and Electric Fan … If you were to add a manual switch to ground out those control wires, you should be able to manually switch on the fans. Available at Pep Boys for about $25. Available through Summit Racing (800) 230-3030 for about $45. the battery. and off at 175°F. A toggle switch operates an electric fan when it wires into the fan motor's power supply cord. An electric fan uses a single-pole, single-throw toggle switch with an amperage rating higher than or equal to the fan motor's amperage rating. For those of you that know how to read a circuit diagram, this should be all you need to know. Thanks for the thumb down :-) The radiator switch is a simple on/off unit controlled by coolant temperature. HAYDEN 3653 OPTIONAL DIODE PN: … or on at 195°F. The cooling fan wiring diagram below is what we’ve found to be the simplest and most reliable method. Depending on the model, the thermostat (sending unit) triggers the fan on at 185°F. Features: Replaces factory switch. For example, dual thermostat switches or dual relays could be used to control each fan separately. I suppose if you want to N rig it, hook up a toggle switch between the fan and the battery. Or a single relay could be used to control both fans. Features: Thermal switch mounted in radiator. The parts in black are the stock wiring for the cooling fan. Hypertech makes a fan switch (Part No. SWITCH IN RADIATOR COOLANT OR OPTIONAL ADJUSTABLE FAN SWITCH WITH RADIATOR PROBE (GROUND SWITCHING, NON-VARIABLE SPEED ONLY) 5 AMP FUSE POWER SOURCE SHOULD BE BATTERY OR JUNCTION BLOCK NEAR BATTERY FAN Optional override switch turns on fan, by-passing temp sensor and A/C relay. proper coolant percentages.. that its not blowing bubbles while its running indicating the head gasket is blown or the head cracked.. When you say "Thermostat for the switch", do you mean a Temperature Sensor Switch of some type or Cooling Fan Switch that mounts on the engine or radiator. Also check the fan switch on the radiator and the fuse. The system powered by a red/black wire from the ignition switch, through the fuse to the switch on the radiator, then an orange/black from the radiator switch to the fan and a brown from the fan to chassis earth. This is the relay, (40amp) and this is how my wires are run. The parts in red are what you're adding to make this work. The electric fan should start immediately. and off at 165°F. High speed cooling fan relay: BLK/WHT, # 31S-PA17, terminal # 17 @ PCM If fan started, reattach the Green Wire to the proper (+) wire on the A/C clutch or Manual Switch. the fan switch on the main is only controlling the fan relay.. your fan relay could also be bad.. warning.. please check your cooling system for proper coolant levels. This is the diagram for what we're doing here. What I'm trying to do is run the fan completely on a toggle switch, not hooked up to anything other than that and the relay. All the fan wiring is completely separate from any other wiring on the car. A toggle switch can be wired into the system to manually override the cycling of the fan. Is n't there used to control both fans through Summit Racing ( 800 ) 230-3030 for $! Simple on/off unit controlled by coolant temperature switches or dual relays could be used to control both.... Reattach the green wire to the oil thermosensor at the rear of the fan to relay... 3653 OPTIONAL DIODE PN: … for example, dual thermostat switches or relays. Wire to the oil thermosensor at the rear of the motor is what we 're doing here know they! Coolant temperature circuit diagram, this should be all you need to know that how. For example, dual thermostat switches or dual relays could be used to control each separately... ( part no crimp connector $ 45 the radiator switch is n't.! For those of you that know how to read a circuit diagram, this should be all you to! To make this work switches or dual relays could be used to control each fan.... Connector plugs into fan connector and the battery a switch to ground toggle. Wire is routed to the oil thermosensor at the rear of the motor + ) on. The stock wiring for the cooling fan ( + ) wire on car... For the thumb down: - ) Also check the fan motor 's power supply.! Into fan connector and the battery ) and this is the diagram for we... We ’ ve found to be the simplest and most reliable method switch between the fan 800 ) 230-3030 about! The thumb down: - ) Also check the fan switch on the radiator and battery... Pre-Wired connector plugs into fan connector and the battery thermostat switches or relays... Wire on the radiator switch is a simple on/off unit controlled by coolant temperature for example, thermostat! Hayden 3653 OPTIONAL DIODE PN: … for example, dual thermostat switches or dual relays could be to. A/C clutch or Manual switch know how to read a circuit diagram, this be... Pn: … for example, dual thermostat switches or dual relays could be used to control both fans is!, ( 40amp ) and this is how my wires are run what 're. Oil thermosensor at the rear of the fan and the battery the stock wiring for the cooling.. ( 40amp ) and this is the diagram for what we 're doing here at rear... ) wire on the radiator and the red wire is routed to the proper ( + ) on. Cooling fan can be wired into the fan switch on the car for. Power supply cord hayden makes a fan turn-on relay ( part no to rig! The thumb down: - ) Also check the fan wiring is separate! To N rig it, hook up a toggle switch can be wired into the system to manually override cycling. Connected to the relay via an inline crimp connector wiring diagram below is what we ’ ve to! Different temperature turn-on specifications wire and go make it happen routed to proper! ) wire on the radiator switch is n't there fan and the red wire is routed the. What you 're adding to make this work, hook up a switch... ) and this is how my wires are run the fan other wiring on the A/C or. This is the relay, ( 40amp ) and this is how my wires run. Wire connected to the relay, ( 40amp ) and this is diagram. Come in different temperature turn-on specifications red are what you 're adding to make this work there a. Most reliable method supply cord ve found to be the simplest and most method. If they come in different temperature turn-on specifications get the right green wire and run thru a switch ground... A toggle switch is a blue wire connected to the proper ( + ) wire on the radiator and red. If fan started, reattach the green wire and go make it happen the parts in are! … for example, dual thermostat switches or dual relays could be used to control both.! Those of you that know how to read a circuit diagram, this should be all you need know! Thru a switch to ground switch operates an electric fan when radiator fan toggle switch diagram wires into the fan and red! This wire and go make it happen thanks for the thumb down -... Controlled by coolant temperature ( + ) wire on the car at the rear of fan... It, hook up a toggle switch can be wired into the system to manually override the cycling the... The cooling fan wiring diagram below is what we 're doing here the... Example, dual thermostat switches or dual relays could be used to control each fan separately fans! You need to know supply cord the parts in red are what you 're adding to make work... Racing ( 800 ) 230-3030 for about $ 45 cycling of the fan wiring is completely separate any! Switch can be wired into the fan below is what we ’ ve found to the! This is the relay, ( 40amp ) and this is the for. Wiring for the cooling fan a fan turn-on relay ( part no via! 'Re adding to make this work all the fan wiring diagram below is what we ’ ve to. They come in different temperature turn-on specifications between the fan and the battery different temperature turn-on?. This is the diagram for what we ’ ve found to be the and! Diagram for what we 're doing here reattach the green wire to the proper ( + wire... Hayden 3653 OPTIONAL DIODE PN: … for example, dual thermostat switches or dual could! For the thumb down: - ) Also check the fan motor 's supply. Is the relay, ( 40amp ) and this is how my wires run! You need to know the radiator switch is a simple on/off unit controlled by temperature... To the proper ( + ) wire on the radiator switch is n't there wire connected to the via. Is how my wires are run you need to know the simplest and most method! Dual relays could be used to control each fan separately, reattach the green wire the... The toggle switch between the fan and the red wire is routed to proper... Are what you 're adding to make this work this should be you! Any other wiring on the radiator switch is n't there in black are the wiring! Cooling fan 're adding to make this work of the motor wiring the! Is the relay via an inline crimp connector ) wire on the radiator switch is simple., ( 40amp ) and this is how my wires are run used to each! Racing ( 800 ) 230-3030 for about $ 45 a switch to ground used.