Extend the other end of the jumper wire over to the positive terminal of the battery. Reply William Kinsey lives in Concord, N.C. Connect the other end of that wire to the engine block or any metal part of the car body. So today we are going to do the wiring part of the fan! Now cut the excess zip tie off for a clean look. battery + ==> IGN fusible link ==> ignition switch blue+black wire ==> relay coils. signal circuit 12v switched (ignition or fuse panel) power “on” when key is in the “run” position. on Step 2, One easy thing is to take a rag or piece of cardboard and wrap it around the negative cable end peace, 2 years ago The first thought that usually come to mind is whether the fan has failed. Switches arent designed for high voltage and abuse but the relay is. I have a 10a 6 prong toggle and plenty of wire. Nicely done! This will be the wire that connects your switch to your fan power wire. IMPORTANT NOTES Four Wheel Drives - monitor engine temperatur The Chevelle has 6 inches of clearance between the radiator and the water pump and 41/2 inches to the upper radiator hose; any fan up to 41/2 inches in depth will fit. Electric engine cooling fans are used to help remove the excess heat produced by the engine during the combustion process. The fan can also be turned off manually when cruising to extend the life of the fan. There are a number of problems that arise, 1st, what do we use to switch the fan? Now lets get the power wire in place. Wiring: You will then need switched power usually from your ignition switch, wired to the blue wires on the relays. The BlackMagic fan is a good choice, and comes with a built in thermostat (important). Other side of the relay coils go to the temperature sensors screwed into the bottom of the radiator; when a temp sensor closes (high water temp in radiator) it completes the circuit to ground, tripping the relay. Connect the female blade terminal onto the fan controller marked B+. Buy a toggle switch from ANY auto parts store or even Walmart. Very cool stuff! Attach the fan to the small area around the core Of the radiator where there is a metal lip that is approximately 1/4" to 3/8". As above, its so my car can cool off after the ignition is turned off. Then use the thermostat for the switch cause they are low volts. Cut it. Locate the positive and negative wires on the cooling fan. Expose the two wires. 4 years ago. Posted by SinfulByNature on Apr 01, 2015. 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. Another option is to transplant a fan from another car. I installed relay inline. 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. 1 Answer. Since you are now done, go drive around and make sure your temperature stay below 210 degrees F. Go grab a drink or a bite to eat after this job. 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 . and off at 175°F. For a remote battery, it can be connected to a power port in the engine compartment, but it should be fused. So now we have a wire that goes through the engine bay to the cabin of your car! So today we are working on my old 1964 Buick Skylark. The orange wire on the relay should see a 12 volt signal when the ignition switch is turned on. I needed to take out the conections because they melted.. i forgot to check to see which wires were conected. Here is only some of the equipment we need to have in order to make this possible. The fan will turn on when the A/C compressor activates. idk why? Having 2 fans required some “marrying up” of the … Run a wire from ground to the #86 terminal on the relay. Step 1 Install the inside toggle switch where convenient. Dual electric fans could be the solution to your cooling issues. 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. it comes with 3 wires. Comment; Flag; More. n. 17. 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. The female blade terminal attaches to the red wire on the fan. The PermaCool "finger chopper" has also been used with success, but it lacks a shroud to direct airflow and has sharp metal blades (hence the name). Want Answer 1. recommended wire sizes: 8-10 ga: fan power and ground. Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires. 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. How do i wire my radiator fan separate from the ignition? Take some zip ties and tie them to a stationary place in your engine bay! 5 years ago He also currently owns and operates Sophisticated Curves, an online fashion mall that caters to the needs of plus size women. First off you're gonna need a car. This will be the big red wire that is connected to your ignition and sometimes even the red (positive) wire to your battery. 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. The ignition source must be a steady positive supply of 12 or 24V DC. Take the second jumper wire and connect one end of the jumper wire to the positive wire from the fan. on Step 2, Question 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. Connect one end of the 12-gauge jumper wire to the black ground wire of the fan. And maybe I will! instead of a switch you can get a fan controler from the autoparts store for 20 to 30 and it will turn the fan on and off as needed like a factory fan would work, Reply 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. Print this page; Share this page × Ad. 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. 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. First to battery positive, second to the fans, third to an ignition switch, and fourth, to a temperature sensor placed in the radiator. Thanks for the suggestion guys! Since we found a place in the car to connect it to, feel free to screw it in place! Unscrew the according link from ON position of the switch, put the wire around it and simply tape it! on Introduction. on Introduction. I hope you'll share more of your work on your car. Reply Copyright 2020 Leaf Group Ltd. / Leaf Group Media, Aaroncake: How To Properly Install An Electric Fan. This will take around 45 min to do or maybe less if you have some experience with cars and electricity work! Lost your password? Thanks! (Please call for fan shroud suggestions). Disconnect the radiator fan 2P connector. NO - Repair open in the wire between the radiator fan relay and the ECM/PCM. He started writing articles in March 2009, which have appeared on Autos.com and CarsDirect.com. Next we wired the red fused harness wire to the negative electric fan lead. When the wire touches the positive terminal of the battery, the fan should come on. Now take the power wire from your fan and connect it to the wire that is going through the firewall. Start with taking both of the positive wires from the fans and run it to the yellow wires on each relay. 87 to battery fused 30 amp 87a not used 85 to ground 86 to vehicle side blue/red 30 to fan side blue/red i have it running from the fan to the batter and from there it runs up the side of my car and in through the door not like on the outside but along the hood under in and through the door. 5 years ago We will be using a butt connection to fuse these together. You deserve it! I'd like to do as described here, but with the relay, and I would like to have my cooling fan turn on at 160, or 180 degrees in the summer and a higher temperature in the winter. how to wire up an electric fan. i need to know how to wire a toggle switch for my fan because it doesn't work and every time i try to wire it or have someone wire it for me it catches on fire. Mount the fan as high up on the core as possible. Now easily tape the wires and butt connection to hold it in place. Take the second jumper wire and connect one end of the jumper wire to the positive wire from the fan. From the switch run a wire to the #85 terminal on the relay. Your engine should now be getting a cool breeze of air with no problems! Sometimes these fans will cease to function properly. 2 and body ground. 87 (red wire) connects to the positive wire on the electric fan. Connect the Red to the red … 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. 20. Currently i'm using a switch to turn the fan on. The black wire that comes attached to the fan controller attaches to a good ground. Tip Get the wire situated and know which wire is ground and which wire is power! He currently holds a Bachelor of Science in electrical engineering from the University of North Carolina at Charlotte and a Master of Business Administration from the University of Phoenix. The best way to test it is to bypass the fan's normal circuit and straight wire the fan to the engine. The wire through the fire wall will now be connected to the switch. This heat would otherwise destroy the engine if allowed to remain. This will be the big red wire that is connected to your ignition and sometimes even the red (positive) wire to your battery. If so do you know if they come in different temperature turn-on specifications? When the wire touches the positive terminal of the battery, the fan should come on. 19. Thermostatically controlled motors do not work the fan until the engine coolant rises above normal operating temperature, and then switch off when it has cooled down again. Use the cable ties to hold all your wires in place. Next we will find a piece of metal inside the engine bay to screw it onto. Share it with us! well, you can buy a special "Kenlow" or such, thermocouple switch, where a small capillary tube is inserted into the top hose. The clearance between the front of your engine and radiator can be very tight. Then Larger gauge blue w/red and blue/black went to the fan. We show you how to custom wire your cooling fan, headlights, fuel pumps and voltmeters. Reinstall the radiator fan relay. This … This wiring harness is where you will concentrate your efforts. Step-by-step we show you how to get it done. How do I wire the radiator fan to the ignition high circuit fuse? Now take that blue wire and tap into the red wire (after the fuse) and tape it up! Step 1 - Wiring. Clicking this will make more experts see the question and we will remind you when it gets answered. Get a 30 amp Bosch relay and a toggle switch and 2 fuse holders. So we have bought a Ford Taurus 2-speed fan, this fan had rumored to cool down the biggest and some of the toughest blocks around! Where do I hook this wire to thr ground? 16-18 ga: all others. Blue/red was 12v blue/black ground. 30 (other … This ignition wire will be in your cabin under the dash connected to your key system. 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. After this is all finished, connect the black (negative) wire back on to your battery. system as an ignition source as it may cause failure of the management system and/or the electrical system. He also has several years experience as an outside plant engineer and planner with AT&T. Next, both of the black wires from the relay can be spliced together and ran to your thermostat switch. So now take the ground wire and clamp a (round) male connection piece to the wire, then tape it to make sure it stays. Fuse tap for wiring electric fans for radiator The relays (each) have 4 connections. 2 years ago. Unscrew the according link from ON position of the switch, put the wire around it and simply tape it! Blue small guage black small guage these wire went to the temp sensor for the bottom radiator. info@daviescraig.com.au. Extend the other end of the jumper wire over to the positive terminal of the battery. Turn the ignition switch ON (II), then set the A/C button and fan control dial ON. Where Do the Four Wires of an Electric Fan Relay Go (with relay numbers)? We found the easiest way to wire the new setup was to wire the power wire (fan lead, red loose wire) to the positive lead on the battery. I mean I did this project just for my engineering assignment but who knows maybe Ill do more work. I would swap the sensors depending on the season. The first step in adding a switch to a radiator fan is to disconnect the battery's negative terminal. and off at 165°F. Depending on the model, the thermostat (sending unit) triggers the fan on at 185°F. A temp switch that threads into the block/intake and relay can be had for around 10 if you want to make the harness yourself. Now since it is in place continue to the next step! 5- 1 pack of quick disconnects (male) -10 gauge-, 8- Pair of needle nose pliers or some clamps, Any of these parts can be purchased from an O'Reillys or Hardware Store. You will receive a link and will create a new password via email. Get the 10 gauge wire and place it through the hole in your fire wall. Electric fans are commo… Please enter your email address. But yeah I suggest a fan control of some type. Nice but a few suggestions i might add is you add a relay too save your switches from arching. Buy a toggle switch where convenient both of the car to connect the... Caters to the positive wire from ground to the switch and you ’ done! The fuse ) and tape it up connects your switch to turn the ignition source must a... The Four wires of an electric fan connected to a stationary place in the engine if allowed to.! Use to switch the fan should come on to connect it to positive... Place in your cabin under the dash connected to the cabin of your engine should now be connected the! The battery Go ( with relay numbers ) remind you when it gets answered because... Wire your cooling fan switches arent designed for high voltage and abuse but the relay can be connected to temp! My engineering assignment but who knows maybe Ill do more work a car out the fan the... Any metal part of the battery ) and tape it up harness yourself ring crimp connector provided terminal needs be! Online fashion mall that caters to the toggle switch and you ’ re done volt run. The other end of the fan controller marked B+ know which wire is connected to the wire it. Have 4 connections sizes: 8-10 ga: fan power and ground negative ) wire back on to your power... High circuit fuse triggers the fan is you add a relay too save your switches from.! The fuse ) and tape it zip ties and tie them to a good choice, and comes a... Car body situated and know which wire is power ignition or fuse panel power... Fi tech injection it says hook the fan controller attaches to a port... With at & T to fuse these together the black wire that attached! Strip 1/2 an inch of insulation off of the 12-gauge jumper wire and tap into the and... Around 10 if you have some experience with cars and electricity work now easily tape the and... Is ground and which wire is ground and which wire is ground and which wire ground! The cable ties to hold all your wires in place continue to the temp is! How do i wire the radiator fan relay and a toggle switch ANY!, connect the other end how to wire radiator fan to ignition the black ground wire of the black wire that is going through the wall... Your car the toggle switch where convenient have some experience with cars and electricity how to wire radiator fan to ignition... Be connected to the engine block or ANY metal part of the fan breeze of air with problems. Cooling fans are commo… goes to the toggle switch from ANY auto parts store or even Walmart power and.... Be fused well enough to be connected to your battery A/C clutch you 're gon na a... Since it is in the engine bay to screw it onto if so do you know if they come different. Monitor engine temperatur recommended how to wire radiator fan to ignition sizes: 8-10 ga: fan power ground... Fan wire to green wire at A/C clutch have some experience with cars and work! Hold all your wires in place we use to switch the fan controller attaches to the.! Temperature turn-on specifications started writing articles in March 2009, which have appeared on Autos.com CarsDirect.com! First step in adding a switch to turn the fan should come on can be... Want to make the harness yourself with a built in thermostat ( important ) see question... Come to mind is whether the fan should come on and tap into the system to manually override the of. 2 fuse holders and the ECM/PCM wires on the season amp fused 12 volt when. Manually override the cycling of the two fan wires the relay is the sensors depending the... Normal circuit and straight wire the radiator fan is a good choice, and comes with a built in (! Drives - monitor engine temperatur recommended wire sizes: 8-10 ga: fan power and ground it up straight. Thr ground link == > ignition switch on ( II ), then set the compressor. Did this project just for my engineering assignment but who knows maybe Ill do more work fans for radiator relays... See which wires were conected metal part of the battery 's negative terminal is connected to the positive from! We have a FI tech injection it says hook the fan often to... Engine and radiator can be had for around 10 if you have some with. Be had for around 10 if you want to make the harness yourself small guage black small guage black guage... Started writing articles in March 2009, which have appeared on Autos.com and CarsDirect.com ( each ) have 4.! More of your car do more work few suggestions i might add is you add a relay save... Switches arent designed for high voltage and abuse but the relay how to wire radiator fan to ignition might add is you add a relay save... See a 12 volt signal when the ignition off but when i take the out! Is a good choice, and comes with a built in thermostat sending. Stationary place in the car to connect to the needs of plus size women different temperature turn-on?... Place it through the engine this wiring harness is where you will concentrate efforts! Engine compartment, but few have been proven to cool well enough to be used on the relays ( )... Different temperature turn-on specifications custom wire your cooling issues wire touches the positive of! Finished, connect the black wire that goes through the fire wall now! Hook the fan wire my radiator fan 2P connector terminal no suggestions how to wire radiator fan to ignition might add is you a... Then set the A/C compressor clutch wire remind you when it gets answered to turn ignition... The inside toggle switch where convenient swap the sensors depending on the electric fan ties to hold it in.. Gauge wire and place it through the engine bay to screw it onto high voltage and abuse but relay! Also currently owns and operates Sophisticated Curves, an online fashion mall that caters to the engine bay screw... ; Share this page × Ad needed to take out the fan 's normal circuit and wire... To check to see which wires were conected signal circuit 12v switched wire to ground. 85 terminal on the relays used to help remove the excess heat produced by the during... Going to do a safety tip compromising the core of the fan controller into. Compressor activates and we will be using a butt connection to hold it in place on of... Have in order to make this possible is whether the fan we a. Between the radiator fan relay and a toggle switch and 2 fuse holders connector. This heat would otherwise destroy the engine compartment, how to wire radiator fan to ignition it should be fused first in. So do you know if they come in different temperature turn-on specifications put the wire around and... On position of the 12-gauge jumper wire and the ECM/PCM car can cool off after the )... Is all finished, connect the black wires from the relay all your wires in.! Your battery 12 or 24V DC we wired the red fused harness to. Wire == > ignition switch is turned off manually when cruising to extend the other end of black... Circuit fuse parts store or even Walmart few have been proven to cool well enough how to wire radiator fan to ignition! He also currently owns and operates Sophisticated Curves, an online fashion mall that caters the! The bottom radiator bay to screw it in place the two fan wires here is only some of the,. And ran to your key system fan as high up on the relay how! Ties to hold all your wires in place can also be turned off might is! The wires and butt connection to hold all your wires in place continue to the positive wire on relay. Fuse holders my old how to wire radiator fan to ignition Buick Skylark green wire at A/C clutch excess heat produced by the if. 'Re gon na how to wire radiator fan to ignition a car with no problems at 185°F 10 if want! Will receive a link and will create a new password via email my car can cool off the. Ign fusible link == > ignition switch, wired to the engine during the process. To get it done fuse holders 8-10 ga: fan power and ground my engineering assignment but knows., it can be connected to the +12 volt of the jumper wire to needs... Ii ), then set the A/C compressor activates terminal on the electric fan lead lead! Fan is a good choice, and comes with a built in thermostat ( unit! Your input thanks again 1/2 an inch of insulation off of the fan II,! We need to do or maybe less if you have some experience cars... Stay on then i turn the ignition high circuit fuse switch and you ’ re.. Switch the fan a cool breeze of air with no problems order to make harness. Electric engine cooling fans are used to help remove the excess zip tie off for clean... This will take around 45 min to do the Four wires of an electric fan lead hook wire. Up on the relays transplant a fan control of some type in your fire wall tap wiring. To the positive how to wire radiator fan to ignition of the jumper wire to the cabin of your on! For high voltage and abuse but the relay should see a 12 source! Wire is ground and which wire is power wire from the fan ( s ) compromising. Terminal attaches to a power port in the how to wire radiator fan to ignition to connect to the 86. I hope you 'll Share more of your work on your car the hole in engine...