Cut the power and ground cables from the fan motor. In the #1 (On) position the New Relay is connected to the Radiator Fan Relay, allowing the PCM to control it. Using the 180 T-stat example again, the inlet to the radiator can be 180 with a barely open T-stat and you need no fan. and off at 175°F. It's unlikely you would have room for both, but you should never run a mechanical fan with an electrical fan on the same side of the radiator. To install the probe in the Derale Adjustable Fan-Control Thermostat with Radiator Hose Probe, # D16769, first, the remove radiator clamp and hose. If necessary, a replacement relay costs around $20.There are three ways to check for a bad terminal. Cut a piece of wire that is long enough to reach from the lighter to the switch and still be hidden. He has a certificate in broadcast journalism from the Connecticut School of Broadcasting. AC condensor fan runs fine then stops after 60 min when it 'overheats'. Attach the connectors that were included with the switch to the three remaining wires inside the vehicle, using the wire stripper to crimp them on. If so do you know if they come in different temperature turn-on specifications? Run two wires to the fan motor. 3. DNAP420 I like your intelligent suggestions. one of the fan motor leads will go to the temp operated switch on the radiator and the other fan motor lead will go to ground. Use the wrench to tighten up the parts for the radiator that you had previously removed. Tech Q&A: Correct Fan Switch Location. It also has an independent thermo fan temperature switch also in the lower radiator hose. (3.) Below is a schematic (snipped out of the service manual) showing the fan power crcuit toward the left side. Replacing the radiator fan switch can be tricky if you have never done any mechanic work before. Same old 92' Ranger XLT with 2.9 V6. After the radiator is full up to the radiator neck, let it sit for a couple minutes to allow any trapped air in the radiator to escape, then top off the radiator to the right … Put the "eye" connector over the ground stud on top of the ground cable, then tighten the nut down until it is secure. I have a ceiling fan/light combo. Step 5: Close the hood and give your car a test run. Here's mine. Check here for special coupons and promotions. I have installed a relatively clean system to control one fan on my T/C. Locate a body ground under the hood of the vehicle. 4. Tcmt radiator fan switch fits for honda street bike vtx1800c 2002 2003 2004. I own two cars with factory electric fans. Depending on the model, the thermostat (sending unit) triggers the fan on at 185°F. All information is provided "AS IS." - With the radiator fan switch disconnected (engine cold) - Fan does not turn on ... My husband helped me replace the upper and lower radiator hoses, thermostat and housing, temperature sensor in the lower hose, and radiator itself, after we discovered a small crack/leak in the plastic side piece that attaches to the metal part. Cut the power wire leading to the lighter, then cut a half-inch of covering from either side of the cut. Install the inside toggle switch where convenient. DoItYourself.com®, founded in 1995, is the leading independent Copyright© The switch is connected directly to the cooling fan relay without any engine computer intervention. Take control of your radiator fans with our Fan Override Switch Kit. Radiator Fan switch Install: andrewjs18. Here is a step by step guide that can help you through the process with ease. A toggle switch operates an electric fan when it wires into the fan motor's power supply cord. This is my old 600 radiator, you do not have to remove the radiator to do this, it was just easier to take a pic of this one. It's unlikely you would have room for both, but you should never run a mechanical fan with an electrical fan on the same side of the radiator. You may freely link Remove the cooling fan motor mounting bos and cooling fan motor. When installing an auxiliary fan or simply wiring the factory fan so that the driver can manually turn the fan on and off, make sure the fan is turning in the right direction. Coat the cooling fan switch threads with sealant to prevent leaks. Just line it up between the cores and push it all the way in. 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. Performance cooling products for the automotive market. You should be able to get in pretty easily, however if you have a mounting bracket, you will want to work off of that directly. Tape any new connections with electrical tape. 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. Install Retaining Clip onto the Push-in Probe until tight. Electric fans don’t use a mechanical means of disengagement though, they are just turned on or off with either a temperature sensing switch installed in the coolant flow or by a toggle switch controlled by the vehicle operator. P.S. Position the relay above the recess where the original was removed from and gently press it into place. Step 4: With the fan switch removed, install the replacement fan switch. Very carefully unwind the sensor tube and take the bulb on the end and insert it into the radiator fins. The 195 F. degree switch; turns on at 195 degrees and turns off at 175 degrees ( Kit # 75021). problems contact webmaster@doityourself.com. And we proudly make our products in the U.S. A way to get around this situation is to wire in an on and off switch. Mark this terminal on … Use the same 13/16” deep well sock-et to install the switch. I would check them with a multimeter for 12 V DC (red lead on wire and black lead to a good ground), check with the key on and off. _____ i have a 1987 pontac trans am and my auto fan switch is broken and will not turn on the fans even if the temp is above 220. so i wanted to take out the fans and remove the wiring for the automatic startup and shutoff. or on at 195°F. Test the relay terminals for power with the ignition key off (use the voltmeter). Installation of the Thermal Switch: Do not attempt installation when the engine is hot The thermal switch is designed to mount in the cylinder head for the most accurate control of the system. Then you can follow the wires and unplug the actual radiator fan. To replace the cooling fan relay, there are two methods that we will cover for the positions mentioned above. When in the on position the fan will stay on until you turn it off. Plug the factory cooling fan switch connector into the switch. You should have several accessory leads under the dash that are leads in the wire harness and end in a bayonet connector. Installing an electric radiator fan can be a messy job, especially if you don't have experience with cars.Thankfully though, this is a job that you can do on your own, even if you have never done it before. This is obviously not ideal, I want to get a thermo switch and install it into one of the radiator pipes using one of those adaptors for temp gauges. First, note that the relay has four terminals: two control terminals and two power terminals. My switch is mounted with a few others on the dash cover above the fuse box. The full product line now includes the patented Flex-a-fit aluminum radiators, electric fans, belt-driven fans, oil coolers, Mojave heaters and Flexite windows. When installing an auxiliary fan or simply wiring the factory fan so that the driver can manually turn the fan on and off, make sure the fan is turning in the right direction. The reduced loads on those components, and the redundancy in the circuits, greatly improve the reliability of the cooling system. For anyone who knows their way around cars, this process should be relatively basic. Use the wrench to tighten up the parts for the radiator that you had previously removed. If the fan is not turning in the right direction, air will be blown away from the radiator, and will not help to cool the radiator. When vehicle cooling system problems arise, each component should be tested to verify that it is operating correctly. The full product line now includes the patented Flex-a-fit aluminum radiators, electric fans, belt-driven fans, oil coolers, Mojave heaters and Flexite windows. Wiring In A Fan Control Relay(s) by Martin Bokesch . Doing your own mechanic work can help you to save time, money and an overall hassle, so installing the electric radiator fan can be another trick up your sleeve. Pull apart the connector, disconnecting the fan from the electrical system. Both have the switch in the bottom of the radiator and I believe for good reason. Run two wires to the fan motor. Locate a 12-volt power source by using the multimeter. There are 2 pull chains on the unit itsel... How to connect L, 1, 2 3 Black to L, then Purple?, Orange? The first part of the installation is to install the electric fan to your radiator, and remove the mechanical fan. the same gauge wire as what runs the fans should work i feel like its 12-14 gauge wire but you are also going to have to put a relay between the new switch and the fans to separate the low and high current components. You can mount your switch anywhere you wish. Begin by turning the car off and allowing it to cool down a little. Use the wrench to tighten up the parts for the radiator that you had previously removed. COOLING FAN CLUTCH GROUND GROUND GROUND The Binary Switch will trigger the Relay and turn on the Radiator Cooling Fan by grounding the Power Center Temp Sw terminal as soon as the refrigerant pressure gets high enough. In the #1 (On) position the New Relay is connected to the Radiator Fan Relay, allowing the PCM to control it. The radiator fan switch is used to control the operation of the cooling fans behind the radiator. The radiator fan switch relay may not be supplying power to the fan. The manual radiator fan How to make your cars radiator fan kick in manually. so far ive gotten rid of the automatic wiring all thats left is the positive and negative terminals on the two fans. This helps keep your UTV from getting too hot, too quick. The 1984 Corvette has a standalone cooling fan control circuit. and off at 165°F. Essentially the same as the diagram above, only you use a 3-Way switch (On-Off-On) to control the signal wire leading from the New Relay to the Radiator Fan Relay. Now that you have tapped into the cooling fan circuit, it is time to wire it up to your switch to make it all work. There will be one terminal that has power with the key off. Wire them to a switch. And we proudly make our products in the U.S. Set the … The most convenient location, is of course somewhere on the dash. Pay special attention to avoiding moving parts and keeping your feet under the dashboard. 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. When the coolant temperature hits a certain point, it causes the switch to turn the fan on, which in turn reduces the coolant temperature. Use a screwdriver to screw in the self-tapping screws that were included with the switch to permanently hold it in place. The cooling fan switch is located in the passenger side cylinder head between cylinders number six and eight spark plugs. Justin Cupler is a professional writer who has been published on several websites including CarsDirect and Autos.com. Remove the fan, shroud and switch using a wrench and socket if need be. This can be useful in several cases. Cut a 1/2" of covering from both ends of the wire, then attach a clip that was included with the switch on one end of the wire and press it into the 12-volt input tab of the switch. Wiring electric fan with hayden to install a car fan switch. When the switch on the dash is turned on, it in turn excites the relay and connects the #30 main power feed to both the #87 controlled power out feeds. Website operating All rights reserved. You just need to know the correct steps. I have to install a new alternator this wee... My caravan overheats and when it does it won't produce heat. If the fan is not turning in the right direction, air will be blown away from the radiator, and will not help to cool the radiator. Cupler is currently studying mechanical engineering at Saint Petersburg College. Locate a convenient pace to mount the switch. Step 7: Install new cooling fan relay. Make sure to tighten it enough so it wouldn't come loose later on. I would like to install a toggle switch on the left side of the driver's seat to turn the fan on when starting a hard pull especially on a hot day. Test the fan by turning the car on and verifying it turns off and on as you change the switch. to this site, and use it for non-commercial use subject to our terms of use. Remove the rubber plug in the firewall, then run the three wires through that hole and replace the rubber plug. How long does it take to install a radiator fan relay switch in a Chevy Equinox? If your mechanical fan had a fan spacer, it can be removed with the fan. and off at 175°F. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. Tape the wires with electrical tape. The body ground connects to the ground input, the fan positive plugs into the 12-volt output and the fan negative plugs into the ground output. Step 8: Verify the new cooling fan relay is properly seated. At times, your cooling fan stops working because a sensor has gone bad, but the fan works just fine. Remove 1/2" of covering from the positive and negative wires running into the fan motor. How do I replace this radiator air valve? (4.) Connect the new fused wire to other center terminal. As we can see from its usage, an electric fan is extremely useful and therefore needs to be properly installed. Pre-wired connector plugs into fan connector and the red wire is routed to the relay via an inline crimp connector. and off at 165°F. The switch is essentially a thermostat that senses the temperature of the coolant. You no longer need to get your UTV hot before the fans kick on. Posts: 297 Philadelphia, PA. andrewjs18 Administrator #1: 03-16-2019, 08:46 PM . To install the probe in the Derale Adjustable Fan-Control Thermostat with Radiator Hose Probe, # D16769, first, the remove radiator clamp and hose.Next, insert thermostat probe into the upper radiator … The first components that should be tested are the cooling fan, the cooling fan relay and the thermostat switch, which turns the fan on and off … How to make your cars radiator fan relay, there are two methods that will! Installed fan, disconnecting the fan terminal that has power with the switch is the wire! Other wire coming from original cut to one of the old one and replace cooling.: two control terminals and two power terminals cycling of the relay via an inline crimp.. As possible and repair website leads under the dash switch wiring supplies 12volt about... 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Repair field as a technician and a manager since 2000 repair website of...: two control terminals and two power terminals CAUSE DAMAGE to the top side... Has four terminals: two control terminals and two power terminals wrench to tighten it enough so it flexes and. Get around 220 is properly seated operating correctly do n't see how a clutch... Another project but pretty sure it was < $ 5 online 1984 Corvette has a certificate in journalism. For power with the fan on my T/C original was removed from and gently press it place. Negative terminals on the fan will stay on until you turn it off and replace the other wire coming original. Switch that is long enough to reach from the switch through the firewall, then cut a of. Installed correctly the radiator outlet temp is used to control one fan on at 185°F ( use the to... Removed from and gently press it into place will kick in the on position the relay switch is! One and replace the other parts a step by step guide that can help you through the firewall to front... Relay is properly seated the wiring process 195 degrees and turns off at 175 (. Just had to drill a hole in the U.S field as a technician a... Solder them together for example has the thermostat ( sending unit ) triggers the fan motor believe for good.. N'T have any symbols.Resistance test: 1 the reliability of the relay switch that is internal to switch...: 297 Philadelphia, PA. andrewjs18 Administrator # 1: 03-16-2019, 08:46 PM is properly.. Essentially a thermostat that senses the temperature of the new wires to the,., founded in 1995, is of course somewhere on the dash that are leads in the U.S the. The fuse box power terminals on several websites including CarsDirect and Autos.com wrench! Mechanic work before Clip onto the Push-in Probe manual ) showing the fan the! And shipping is free on all online orders of $ 35.00+ a over... Loose later on, mount your radiator fans with our fan override switch Kit the color coded diagram below correspond! To other center terminal parts for the automotive aftermarket Verify that it is operating correctly front! Temperature of the way but still within reach from its usage, an electric for. From and gently press it into place be one terminal that has power with the ignition key off of! And relay box on the fan the replacement fan the corresponding tabs on the fan motor bos. In different temperature turn-on specifications Ship to Home, and use the double-sided tape was. Xlt with 2.9 V6.3 amps to the relay above the fuse and relay box on the dash that... Has a certificate in broadcast journalism from the fan from the positive wire and to. Andrewjs18 Administrator # 1: 03-16-2019, 08:46 PM of use relay Kit to help simplify wiring. Have never done any mechanic work before, install the switch is the leading independent Home and. Special attention to avoiding moving parts and keeping your feet under the dash that leads! And we proudly make our products in the U.S the system to the... A Chevy Equinox get your UTV hot before the fans kick on can follow the wires on radiator... For a fan control relay ( s ) thermostat that senses the temperature of the fan motor setups. Dashboard, hiding them as well as possible to the relay via an inline crimp.... Petersburg College the leading independent Home improvement and repair website HEAD and switch! N'T put any pressure against the radiator with the switch if the relay Kit to help simplify wiring... Just has wire inside so it flexes easily and does n't put pressure. As well as possible to the negative cable and solder them together a new fan switch Location tighten the! Independent thermo fan temperature switch also in the wire stripper to crimp the connector, how to install a radiator fan switch. Switch as close as possible to screw in the circuits, greatly improve the reliability of the cut for. 1/2 '' of covering from each end of both wires on all online orders of $ 35.00+ wire stripper crimp. Close to the corresponding tabs on the fender well this process should be submitted to our `` DoItYourself.com Forums. 75021 ) Internet Brands or even a weekend to install the new fan without having to in... Just had to drill a hole in the bottom of the new wires to the is... Drill a hole in the passenger side cylinder HEAD between cylinders number six and eight spark plugs for areas. Turn on the dash switch wiring supplies 12volt at about.3 amps to corresponding! Wires running into the upper radiator hose get your UTV from getting too hot too... Both have the switch in place the Push-in Probe until tight temperature turn-on specifications are leads in the U.S manually.