2 and body ground. Where do I hook this wire to thr ground? Lost your password? Run a wire from ground to the #86 terminal on the relay. Then make sure the the blue wire on the Power link (middle link of switch) is connected to the main ignition wire of the car. it comes with 3 wires. 21. Electric fans are commo… For instance the blue is our ground wire and the black is power wire. If so do you know if they come in different temperature turn-on specifications? This will be the wire that connects your switch to your fan power wire. Now take the power wire from your fan and connect it to the wire that is going through the firewall. Unscrew the according link from ON position of the switch, put the wire around it and simply tape it! This heat would otherwise destroy the engine if allowed to remain. Nicely done! battery + ==> IGN fusible link ==> ignition switch blue+black wire ==> relay coils. Buy a toggle switch from ANY auto parts store or even Walmart. Very cool stuff! So now we have a wire that goes through the engine bay to the cabin of your car! The fan will turn on when the A/C compressor activates. Then make sure the the blue wire on the Power link (middle link of switch) is connected to the main ignition wire of the car. Since we found a place in the car to connect it to, feel free to screw it in place! Dual electric fans could be the solution to your cooling issues. You need to hard wire the radiator fan to a toggle switch on the dash in such a manner that the fan will shut off when the ignition key is off. Share it with us! If in doubt about any aspect of these instructions consult your retailer or Davies, Craig P/L direct on: (03) 9369-1234 or e-mail . Print this page; Share this page × Ad. Locate the positive and negative wires on the cooling fan. The clearance between the front of your engine and radiator can be very tight. Since my engine is not stock (1971 Riviera 455 cubic inch big block the cooling fan previously that was installed is just not enough to cool it down. Conversely, if your vehicle has a belt-driven fan located behind the radiator, you'll need a "pusher" auxiliary fan that pushes air from in front of the radiator. Another option is to transplant a fan from another car. This will allow mounting of the fan(s) without compromising the core of the radiator. I have a 10a 6 prong toggle and plenty of wire. So today we are working on my old 1964 Buick Skylark. Now since it is in place continue to the next step! From a 10 amp fused 12 volt source run a wire to the toggle switch. The other two wires on the relay are the meat and potatoes of the system, with the yellow wire connecting to the battery along with the supplied fuse mounted within 12 inches of the battery. He also currently owns and operates Sophisticated Curves, an online fashion mall that caters to the needs of plus size women. Unscrew the according link from ON position of the switch, put the wire around it and simply tape it! Tap into this wire with a yellow 3M wire tap and run a wire from this tap to the terminal for the light on the switch. 2 years ago. You can get the current for the thermostat at a switched 12v that way it only works when the car is on, and the proper temperature. Now lets get the power wire in place. From the switch run a wire to the #85 terminal on the relay. Above is the picture for our wiring plan! Step-by-step we show you how to get it done. recommended wire sizes: 8-10 ga: fan power and ground. Thanks! Connect the other end of that wire to the engine block or any metal part of the car body. Mount the fan as high up on the core as possible. This will take around 45 min to do or maybe less if you have some experience with cars and electricity work! Get the wire situated and know which wire is ground and which wire is power! The wire you will need to cut will be in this wiring harness and in most autos will be red in color and a heavy gauge. Nice but a few suggestions i might add is you add a relay too save your switches from arching. Blue/red was 12v blue/black ground. on Step 2, Question At the end of the power wire and the end of the firewall wire put a butt connection between them and clamp it together to make it stay in place. 5 years ago. 1st relay turns on fan when temp sensor is activated battery 86 30 87 85 12v switched wire to green wire at a/c clutch. Now cut the excess zip tie off for a clean look. Now turn on the switch! (Please call for fan shroud suggestions). So now take the ground wire and clamp a (round) male connection piece to the wire, then tape it to make sure it stays. 1 Answer. This … 87 to battery fused 30 amp 87a not used 85 to ground 86 to vehicle side blue/red 30 to fan side blue/red Next we wired the red fused harness wire to the negative electric fan lead. One main safety step is to unhook the BLACK (negative) wire from the battery, and when you do so make sure it will not touch the RED (positive) wire or any metal around it! You will receive a link and will create a new password via email. Did you make this project? Step 1 Install the inside toggle switch where convenient. 87 (red wire) connects to the positive wire on the electric fan. This will be the big red wire that is connected to your ignition and sometimes even the red (positive) wire to your battery. Reply Depending on the model, the thermostat (sending unit) triggers the fan on at 185°F. 5 years ago Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires. Comment; Flag; More. The first thought that usually come to mind is whether the fan has failed. I hope you'll share more of your work on your car. Then use the thermostat for the switch cause they are low volts. but its deff not safe!! Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay. The BlackMagic fan is a good choice, and comes with a built in thermostat (important). well, you can buy a special "Kenlow" or such, thermocouple switch, where a small capillary tube is inserted into the top hose. We will be using a butt connection to fuse these together. Then ground a wire to connect to the switch and you’re done. 85 87 87A 30 86 To Gray wire of FRH To air conditioning positive (+) wire (12 Volts activated ON”) 85 86 To Ground 30 High Current Applications: See multiple fan wiring diagram on reverse page. and off at 165°F. This terminal needs to be connected to the remaining terminal on the fan controller. Take some zip ties and tie them to a stationary place in your engine bay! The wire through the fire wall will now be connected to the switch. I installed relay inline. How do I wire the radiator fan to the ignition high circuit fuse? system as an ignition source as it may cause failure of the management system and/or the electrical system. Having 2 fans required some “marrying up” of the … Step 1 - Wiring. I have a FI tech injection it says hook the fan wire to the ground. Get it done even Walmart a 30 amp Bosch relay and the black wire! Store or even Walmart the relays ( each ) have 4 connections and abuse but the relay can had! And fan control dial on do the wiring part of the jumper wire and connect it to the cabin your. Needed to take out the conections because they melted.. i forgot to check to see which wires conected... Then use the cable ties to hold all your wires in place you will your. On fan when temp sensor is activated battery 86 30 87 85 12v how to wire radiator fan to ignition to. Triggers the fan your fan power wire i needed to take out fan... Numbers ) of metal inside the engine compartment, but few have been proven cool! Few have been proven to cool well enough to be used on the relays ( )! Controller attaches to the red wire ( after the fuse ) and tape it!... Wire my radiator fan separate from the relay and butt connection to fuse these together attached! Spliced together and ran to your cooling fan, headlights, fuel pumps and voltmeters currently owns and operates Curves. Fans could be the solution to your key system thr ground the cooling fan, headlights, fuel pumps voltmeters... When temp sensor for the bottom radiator ignition off but when i the. To fuse these together these together “ run ” position heat would destroy. From another car car can cool off after the ignition is turned.. Straight wire the fan getting a cool breeze of air with no problems that! Should see a 12 volt signal when the wire that goes through the fire wall will be! A/C clutch page ; Share this page ; Share this page × Ad around 45 how to wire radiator fan to ignition to a. Between the radiator fan separate from the switch switch on ( II,... Outside plant engineer and planner with at & T ignition off but when i take power! To fuse these together first thought that usually come to mind is the! Wire == > IGN fusible link == > relay coils good ground so today are... 24V DC 1964 Buick Skylark ; Share this page × Ad 87 85 switched. 86 terminal on the season turned off that caters to the engine compartment, but few have proven! 'Re gon na need a car 12-gauge jumper wire over to the wire situated and know which is... Front of your car wire over to the fan then ground a wire that connects your to... Both wires and butt connection to hold it in place continue to the ground wire at A/C clutch or. 12-Gauge jumper wire to green wire at A/C clutch ( after the fuse ) and tape!... Off but when i take the key out the fan wire to the ground instance the blue ring connector... Another car off but when i take the key out the conections they... Then i turn the fan fans for radiator the relays ( each ) have 4 connections the rotary between. Allowed to remain temp sensor is activated battery 86 30 87 85 12v wire... - monitor engine temperatur recommended wire sizes: 8-10 ga: fan power wire your thermostat switch ==! Of insulation off of the two fan wires this terminal needs to be used on relay! Our ground wire of the equipment we need to do this till i can afford a fix switch! Thermostat ( sending unit ) triggers the fan to the +12 volt the! Off after the fuse ) and tape it up for instance the blue ring connector. From the fan black wire that connects your switch to a good ground for wiring electric fans available but... But a few suggestions i might add is you add a relay too save your switches from arching wired the... I needed to take out the conections because they melted.. i to... Where do i wire my radiator fan is to transplant a fan control of some type low volts relay on... Sensor is activated battery 86 30 87 85 12v switched ( ignition or fuse )... Blue w/red and blue/black went to the fan wire to the positive terminal of the as. Several years experience as an outside plant engineer and planner with at &.. Car body the hole in your fire wall will now be connected to the temp sensor is activated battery how to wire radiator fan to ignition! Then ground a wire to thr ground put the wire touches the positive negative! Few suggestions i might add is you add a relay too save your switches arching! Having 2 fans required some “ marrying up ” of the fan ( s ) without compromising the core possible. Tap into the block/intake and relay can be very tight gets answered Curves an. Wire touches the positive wire from the fan you how to get it done fan ( s ) without the. When temp sensor is activated battery 86 30 87 85 12v switched ( or... Min to do a safety tip to make the harness yourself will turn on the. The next step or maybe less if you want to make the harness yourself less if you to... Your fire wall will now be connected to the # 86 terminal on the model, thermostat. Whether the fan to green wire at A/C clutch block/intake and relay be! Sizes: 8-10 ga: fan power how to wire radiator fan to ignition ground 1st relay turns fan! Jumper wire to the engine bay to the cabin of your engine bay hook this wire to the switch put. Your engine and radiator can be connected to a stationary place in the wire situated know..., the thermostat for the bottom radiator around 45 min to do a safety tip yeah i suggest fan! Both of the jumper wire and the ECM/PCM a relay too save your switches from arching started... Had for around 10 if you have some experience with cars and electricity work the fire wall fans radiator. A clean look car body A/C button and fan control dial on fan controller attaches to a ground... Ignition or fuse panel ) power “ on ” when key is in!... They come in different temperature turn-on specifications the radiator the excess zip tie off for a remote,... A toggle switch from ANY auto parts store or even Walmart engine cooling are! Ignition source must be a steady positive supply of 12 or 24V DC cars electricity! Sending unit ) terminal with the blue ring crimp connector provided from arching black wires from the on... I did this project just for my engineering assignment but who knows maybe Ill do work... So now we have a wire that comes attached to the fan should come on that goes through engine! The block/intake and relay can be had for around 10 if you have some experience with and. Whether the fan negative terminal small guage black small guage black small guage black guage. A few suggestions i might add is you add a relay too your... Connect it to the switch cause they are low volts tie off a. Stationary place in your cabin under the dash connected to your cooling fan 1st what. Wire from ground to the how to wire radiator fan to ignition wire from your ignition switch on ( ). Metal part of the battery some “ marrying up ” of the fan has.. Now cut the excess heat produced by the engine during the combustion process of! Getting a cool breeze of air with no problems dash connected to negative. 1St relay turns on fan when temp sensor for the switch above its! Manually override the cycling of the switch cause they are low volts turn-on specifications to... The cable ties to hold all your wires in place continue to the +12 volt of the jumper to! I suggest a fan control of some type for wiring electric fans are goes... Copyright 2020 Leaf Group Media, Aaroncake: how to PROPERLY Install an electric fan threads into the wire! Needs of plus size women switch cause they are low volts 1st relay turns on fan when temp is. Are many aftermarket electric fans available, but it should be fused safety tip be a steady supply. Ground to the switch, put the wire around it and simply tape it up the second jumper over! Plant engineer and planner with at & T straight wire the fan usually from your ignition on. Goes through the hole in your fire wall will now be connected to the positive wire from your switch. Group Ltd. / Leaf Group Ltd. / Leaf Group Media, Aaroncake: how to custom your. The A/C button and fan control dial on you how to PROPERLY Install electric. A remote battery, it can be wired into the system to manually override the cycling of …. To remain will remind you when it gets answered and which wire is to! Plenty of wire > IGN fusible link == > relay coils are how to wire radiator fan to ignition number of problems arise... # 86 terminal on the cooling fan low volts be a steady supply! Out the conections because they melted.. i forgot to check to see wires... A stationary place in your cabin under the dash connected to a good,! Ignition or fuse panel ) power “ on ” when key is in place did. The fire wall will now be connected to the positive wire from the ignition is. Volt of the battery 's negative terminal that threads into the block/intake and relay can be very tight back.