Take the second jumper wire and connect one end of the jumper wire to the positive wire from the fan. Turn the ignition switch ON (II), then set the A/C button and fan control dial ON. Wiring: Nice but a few suggestions i might add is you add a relay too save your switches from arching. The fan can also be turned off manually when cruising to extend the life of the fan. This was mainly for simple wiring and for old cars but I totally understand your input thanks again! 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. 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. First off you're gonna need a car. 2 years ago 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. Sometimes these fans will cease to function properly. 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. battery + ==> IGN fusible link ==> ignition switch blue+black wire ==> relay coils. Now cut the excess zip tie off for a clean look. 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! Very cool stuff! Then Larger gauge blue w/red and blue/black went to the fan. Now turn on the switch! When the wire touches the positive terminal of the battery, the fan should come on. Unscrew the according link from ON position of the switch, put the wire around it and simply tape it! 5 years ago Extend the other end of the jumper wire over to the positive terminal of the battery. A lot of people are now fitting electric fans to their kit cars, often because they have had to relocate the radiator away from the normal viscous fan. Now take the power wire from your fan and connect it to the wire that is going through the firewall. Did you make this project? 2 and body ground. Switches arent designed for high voltage and abuse but the relay is. From a 10 amp fused 12 volt source run a wire to the toggle switch. info@daviescraig.com.au. Then use the thermostat for the switch cause they are low volts. This … 21. Locate the positive and negative wires on the cooling fan. 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! Because the fan motor pulls a lot of amps, you should wire the switch to a relay and the relay to the fan. recommended wire sizes: 8-10 ga: fan power and ground. 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. I would swap the sensors depending on the season. We will be using a butt connection to fuse these together. The best way to test it is to bypass the fan's normal circuit and straight wire the fan to the engine. Lost your password? 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 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. it comes with 3 wires. the fan often wants to stay on then i turn the ignition off but when i take the key out the fan stops. how to wire up an electric fan. Need to do this till I can afford a fix. After this is all finished, connect the black (negative) wire back on to your battery. Disconnect the jumper wire. Unscrew the according link from ON position of the switch, put the wire around it and simply tape it! 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. The first thought that usually come to mind is whether the fan has failed. As above, its so my car can cool off after the ignition is turned off. but its deff not safe!! 16-18 ga: all others. 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 20. Another option is to transplant a fan from another car. or on at 195°F. Get the 10 gauge wire and place it through the hole in your fire wall. idk why? Extend the other end of the jumper wire over to the positive terminal of the battery. Disconnect the radiator fan 2P connector. Expose the two wires. Tip n. 17. Having 2 fans required some “marrying up” of the … 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. Want Answer 1. Thanks! The ignition source must be a steady positive supply of 12 or 24V DC. Now since it is in place continue to the next step! 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. Grey wire is connected to the thermostat (sending unit) terminal with the blue ring crimp connector provided. How do I wire the radiator fan to the ignition high circuit fuse? 1 Answer. Currently i'm using a switch to turn the fan on. signal circuit 12v switched (ignition or fuse panel) power “on” when key is in the “run” position. I installed relay inline. Now lets get the power wire in place. Here is only some of the equipment we need to have in order to make this possible. 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. So today we are working on my old 1964 Buick Skylark. 87 to battery fused 30 amp 87a not used 85 to ground 86 to vehicle side blue/red 30 to fan side blue/red A toggle switch can be wired into the system to manually override the cycling of the fan. For a remote battery, it can be connected to a power port in the engine compartment, but it should be fused. system as an ignition source as it may cause failure of the management system and/or the electrical system. If so do you know if they come in different temperature turn-on specifications? Depending on the model, the thermostat (sending unit) triggers the fan on at 185°F. Blue small guage black small guage these wire went to the temp sensor for the bottom radiator. But yeah I suggest a fan control of some type. This ignition wire will be in your cabin under the dash connected to your key system. Electric fans are commo… Connect one end of the 12-gauge jumper wire to the black ground wire of the fan. First to battery positive, second to the fans, third to an ignition switch, and fourth, to a temperature sensor placed in the radiator. The clearance between the front of your engine and radiator can be very tight. He also currently owns and operates Sophisticated Curves, an online fashion mall that caters to the needs of plus size women. 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 . The orange wire on the relay should see a 12 volt signal when the ignition switch is turned on. Run a wire from ground to the #86 terminal on the relay. Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires. 18. 30 (other … Use the cable ties to hold all your wires in place. 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. 19. The BlackMagic fan is a good choice, and comes with a built in thermostat (important). This will be the big red wire that is connected to your ignition and sometimes even the red (positive) wire to your battery. This will be the wire that connects your switch to your fan power wire. Step 1 - Wiring. I hope you'll share more of your work on your car. I have a FI tech injection it says hook the fan wire to the ground. Reinstall the radiator fan relay. This heat would otherwise destroy the engine if allowed to remain. The wire through the fire wall will now be connected to the switch. Step-by-step we show you how to get it done. Reply So today we are going to do the wiring part of the 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. Blue/red was 12v blue/black ground. 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. 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). Get a 30 amp Bosch relay and a toggle switch and 2 fuse holders. on Introduction. Thanks for the suggestion guys! 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. When the wire touches the positive terminal of the battery, the fan should come on. Nicely done! and off at 175°F. Comment; Flag; More. Connect the Red to the red … Some auxiliary fans are "reversible", which means they can spin in either direction to pull or push air from either side of the radiator. William Kinsey lives in Concord, N.C. well, you can buy a special "Kenlow" or such, thermocouple switch, where a small capillary tube is inserted into the top hose. 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. 2 years ago. Posted by SinfulByNature on Apr 01, 2015. 5 years ago Share it with us! This will take around 45 min to do or maybe less if you have some experience with cars and electricity work! This wiring harness is where you will concentrate your efforts. That's assuming the radiator itself IS GROUNDED PROPERLY. (Please call for fan shroud suggestions). on Introduction. Mount the fan as high up on the core as possible. Fuse tap for wiring electric fans for radiator The relays (each) have 4 connections. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, Aaroncake: How To Properly Install An Electric Fan. This terminal needs to be connected to the remaining terminal on the fan controller. and off at 165°F. We show you how to custom wire your cooling fan, headlights, fuel pumps and voltmeters. The first step in adding a switch to a radiator fan is to disconnect the battery's negative terminal. Buy a toggle switch from ANY auto parts store or even Walmart. Reply Measure the voltage between the radiator fan 2P connector terminal No. DNAP420 I like your intelligent suggestions. The female blade terminal attaches to the red wire on the fan. Please enter your email address. He also has several years experience as an outside plant engineer and planner with AT&T. There are a number of problems that arise, 1st, what do we use to switch the fan? I needed to take out the conections because they melted.. i forgot to check to see which wires were conected. 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". This is where it’s important to note that the unit has a maximum draw of 25 continuous amps, and must not exceed that. He started writing articles in March 2009, which have appeared on Autos.com and CarsDirect.com. Then ground a wire to connect to the switch and you’re done. 5 years ago. Next we will find a piece of metal inside the engine bay to screw it onto. The black wire that comes attached to the fan controller attaches to a good ground. Your engine should now be getting a cool breeze of air with no problems! Dual electric fans could be the solution to your cooling issues. You deserve it! Get the wire situated and know which wire is ground and which wire is power! Take some zip ties and tie them to a stationary place in your engine bay! So now we have a wire that goes through the engine bay to the cabin of your car! Where do I hook this wire to thr ground? goes to the +12 volt of the A/C compressor clutch wire. 87 (red wire) connects to the positive wire on the electric fan. The wire through the fire wall will now be connected to the switch. I have a 10a 6 prong toggle and plenty of wire. There are many aftermarket electric fans available, but few have been proven to cool well enough to be used on the rotary. 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. For instance the blue is our ground wire and the black is power wire. Take the second jumper wire and connect one end of the jumper wire to the positive wire from the fan. 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. You will then need switched power usually from your ignition switch, wired to the blue wires on the relays. Metal part of the fan controller in your cabin under the dash connected to fan! Terminal no it says hook the fan stops fan can also be turned off manually when cruising extend. 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