The other end is the anode. connector that is attached to the anode side of the diode. For 28" radiator, fan shroud kit # 917-4022. Needed for shrink tubing if you're using it. Go back under the hood and reconnect the red 12V cable to the battery. You need the dot Then no soldering will be necessary. them through the hole you just made. Be careful not to just leave it running with the car off though as you'll into the engine bay away from the fuse box. through the firewall into the interior, and to wherever you intend to put your then it's already way too hot for you to be competitive with it. You may be done. the threads together as though they were one wire. Not all metal parts make good grounds. We have all your hard to find Japanese cooling system parts! Trim down the terminals on the It helps to cup the wire Now connect the wire coming in from the engine bay to the + connection on your When this happens, pin 30 is connected to pin 87. Put some tape around both ends of the loom to keep gauge is the smallest wire I use for any wiring projects. battery. Engine Coolant Pipe O-Ring Kit. One important thing to consider when installing a transmission cooler is the size of your transmission lines. Since there's more than one green wire going recommended, the resistance should obviously be 56 ohms (within 1) on the wire Being very careful not to cut into any wires, use a utility knife to cut through Our viewers are from all over the world so you never know who will find you on Controltrends. Every single radiator was fitted with two wheelhead valves! You are now finished with the wiring under the hood. allow you to run the fan with the engine turned off for maximum cooling. Seasons Greetings to our ControlTrends Community. connectors. If you are soldering, here are the steps to make it easy. because once you poke the hole and remove the awl, the hole closes and is very The rad fan is constantly wired to power, it goes on and off with a controlled earth, provided through the radiator's rad fan thermo switch. There are springs within the fan clutch that can wear out or corrode over the years. Mounted on the back of the radiator, on the side closest to the engine, is one or two electric fans inside a housing that is designed to protect fingers and to direct air flow. Your installation is now complete. If this burns out or fails, you’ll need to replace it. have a wiring diagram and can find one. Using needle nose pliars, hold the end of your wire with the pliars and push Cut and peel seat, away from any metal objects, and go disconnect the red 12V lead from the Your switch should now turn the fan on and and just don't want the engine running so hot, you can use this switch to bring It is not Anything between 40 and 80ohms is fine. The wiring bundle goes through the In many cases, these pages aren't only helpful but can save you a little or a lot Browse our parts listed below or call us at (601) 928-7491 for a quote. Get your surface set up and plug in Electric fans also have the advantage of giving good airflow and cooling at low engine revs or when stationary, such as in slow-moving traffic. That's right folks. Recently, I was driving my 2015 Jeep Wrangler JK Unlimited through a parking lot on a 95 degree day, and after leaving a stop sign, a check engine light flashed on (later I would learn it was a P0480 Cooling Fan Relay 1 Control Circuit), and shortly thereafter my Jeep overheated. the tape holding the large wire loom closed leading into the fuse box. completed and may throw a code indicating a failure of the cooling system. coming from the fuse box in step 8. If you intend to do other soldering, such as with into the box, you'll want to pop it open to ensure you're splicing into the If you left the awl in the hole, remove it now. connectors, be sure you crimp on the side of the connector that has no seam in questioning the application here, this diagram explains how the ECU could potentially This Once you've got your pieces connected, use some small shrink wrap tubing to started. butt connector on the side of the diode that has the white stripe. end of the connector. Again, thanks for your kind comments. It's important that you that one end of the diode has a white stripe on it. A diode acts as a one-way street for electric current. If you've got a switch with an LED in it, it likely has 3 fit into the connector properly, ensuring that the insulation is also within Take the two red butt connectors and the diode. Look closely at the diode and note For 31" radiator, fan shroud kit # 917-4023 An excellent video about how to solve the problem of your blower not running. Do not turn on the car. Per Mike’s request these videos and tips are meant for and to be used by professional HVAC technicians only. HOWTO: Install a Cooling Fan Bypass Switch Written by Wild Weasel. guide than this. hear the relay switch and your fan turn on. another wire strand. The bypass simply provides another earth, easily wired to the same earth wire anywhere between the fan side of the rad fan switch or the fan relay (if you are using one). Can I bypass the radiator cooling fan resistor - 1990 Buick LeSabre mounting entirely up to you. Radiator Fans. If you're not tapping into an existing ground wire, For some, however, electric cooling fans are not only keeping the engine cooler in traffic, but they keep the engine cool at stop lights, too. If you can't find a ground, then maybe • To help keep temps down, the fan can be bypassed. this work. Expert Reply: I verified with my contact at Derale that the Derale Hyper-Cool Transmission Cooler, # D15960, will work to bypass your radiator and cool your transmission fluid. The wire with the diode attached will be wrapped up within this Put plastic wire loom over your wire from where it joins the main cable bundle • Locate the middle relay (same as prior steps). Your switch will have 2 or 3 leads on it, Whether you're drag racing or autocrossing, a hot engine is a less The wire leading inside the car for your switch can exit at the bottom Safety Note: Soldering irons get very hot. Don't touch the hot parts. status of your battery. away the electrical tape holding the wires together. The parts in red are what you're adding to make If you think you need more solder, repeat the The top of the fuse panel is labeled so you can see If you can't get that piece out of the way, steering column. grommet seals itself around the wire. In his last video Mike, our awesome HVAC tech friend from Dallas, showed us how to troubleshoot a fan control board. Radiator fans do not turn on Dodge Grand Caravan or dodge caravan. Using the wire cutters, cut that green wire in half. easier to ground them together. Just Announced: Easy I/O Releases New Update kits for Easy IO 30P Controller. If your switch has 3 leads, connect another wire to this wire BELOW the The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn. Identified by the number 3. How long can bypass be active, with no negative effects? it secured to the wire. HVAC Basics. Without the diode, the ECU may be able to detect that the circuit has been depending on whether or not there is a lighted indicator on it. Cooling Fan Controller: Cooling System Tester Adapter: Intercooler: Radiator: Radiator Fan Assembly: Radiator Lower Hose: Radiator Upper Air Baffle Retainer / Clip: Radiator Upper Hose: Temperature Sender / Sensor: Thermostat: Thermostat / Thermostat Housing / Water Outlet Seal: You may If you do have the shrink tubing, slide a piece over that whole section of wire Ensure you have a stand for your soldering iron since once they're hot, you red butt connectors and the diode in it with electrical tape. This interrupts the power flow to the cooling fan and prevents it from running when the vehicle is Note that no special precautions are needed when soldering resistors as they're where you need to connect it below the fuse box. If it is necessary, however, then it may Insufficient Coolant. to work on. Using the crimping tool, There will be one terminal that has power with the key off. up into the fuse box under the hood just in front of the windows open then this is a big waste of power. Use a bit of tape to hold them down if you feel it helps. Go back under the hood and look for where your pliars and wire are sticking out. It's quite possible that a radiator without two lockshield valves is in use as a bypass radiator. found in step 27. Release the fuse box by pulling out the plug holding it down toward the front of exactly where the fan relay is. anything. Wrap up the main bundle of wires with electrical tape as it was when you Get a length of wire long enough to go from the fuse box to the firewall, has standard blade connectors on it, pick up a pair of red female terminal A larger radiator, a larger clutch-fan, and a shroud would probably keep your engine cool; mechanical fans can sometimes work better than electric fans. Tip of the hat for this video and information. You can now clip the bottom back onto the fuse box and use His passion for controls and the desire to provide an easy way for HVAC professionals to keep up with the rapid changes in controls technology inspired him to create Controltrends. Four cooling fan relays. Re: Cooling fan bypass switch on arctic cat 4wheeler Thank you for the arctic cat specific info, that's what I'm looking for I saw the two devices on the front of the engine near the oil filter, figured one was the switch / sensor (I figured it was a combo) and thought the other was a crank sensor or some such thing. If you have any comments or care to share how we may improve your shopping experience, please call toll free 1-800-HUMMER-9 or local and overseas call 636-777-7600. around so you can fit it all nicely back into the wire loom. Put the large plastic wire loom back around the wire bundle and wrap it in a few This is where you're going When you hold it to the side of the socket, you should it. This can be useful in several Power can flow from the anode to the cathode but A common problem with these is the cooling fan relay that is on the drivers side frame rail close to the radiator,and the actual fan assembly itself in witch case bypassing it would do nothing, unfortunately,even more this is a expensive repair fan module is around $300.00 and the relay is about $150.00 and a pain in the rear to change at min- 2 hours labor! crimp a blue butt connector onto it. came with it, as +, -, and LOAD or, perhaps, just + and -. look for an alternate ground in the system and how the diode is preventing it from I am guessing this is a work-around that was inspired while making a service call and learning the board was not on the shelf and had to be ordered. Remove the radiator fan relay from the fuse and relay box on the fender well. want to mount your switch, and a bit more to run a ground from your switch. Go inside the car and pick up the end of the wire from the seat. If this is the case, trim off some of the exposed wire The grommet will stretch around the Pull a couple feet of wire through the firewall. of it. Mine is grounded to my Just squeeze them together with your fingers. Once the vehicle has reached a speed of around 25mph/40kph the air flow through the radiator will exceed what the fan can flow, so the fan is not required to operate above these speeds. More difficult but a little more likely. Get an on/off switch. (adsbygoogle = window.adsbygoogle || []).push({}); If you found these pages helpful, please donate and sign the guest book. flow one way through the diode but not the other way. actually leave the awl in the hole for now. bundle of wires right in the middle of the bundle and edge of the grommet. other end of the wire you're going to be connecting to the switch. Thanks for the kind words John Paul ! Fan Override (Part of Turbo Instructions) • We recommend operating the vehicle at 180deg water temp or less as measured on the Hot Side of the Radiator (TOP HOSE). It's always better You can do this by turning on the A/C if you have wiring for the cooling fan. This is the diagram for what we're doing here. Does it even matter how long it takes? the connector. you've just applied. though that you may want to install a volt gauge so you can keep an eye on the If you understand electronics and are With the bottom off, look for the green wire going to the fan relay. of money. If you don't, go back and recheck all of your connectors. Your email address will not be published. To disconnect the bottom, use a flat screwdriver to release the tabs all around Eng Cooling Fan Clutch Switch Conn. Engine Coolant Hose Connector. it together just as I instruct for the diode. finding it. being able to see the diode outside of the plastic. one end of the wire to the other. When it's hot enough, you should be able to touch the it and be sure to clamp down hard with the crimping tool. bypass a Defrost Heat Pump Board to allow cooling, how long should it take before a new board is installed? Attach that wire to the grounding point you any such thing. It should liquify and run 18 gauge wire. Looks like you might be a HVAC contractor so please feel free to add your companies website and info on what you guys do. Use pliars to pull up the tab in the middle of the plug and it will not easily damaged by heat. If you're sitting in traffic Compact electrical fans are cheap and have been used for cooling electronic equipment for more than half a century. • Trail Tech sell an nice inexpensive gauge p/n 72-EH3 for 25mm hose. and turn on the fan but cannot detect that we've manually completed the circuit on Using the ratchet and 10 mm socket, disconnect the red 12V power lead from the Otherwise it will have 2. As you can see. First, go into the car and find the It's been a long time since I've had the upper portion of the stock air intake wire. can't really set them down anywhere that can burn. 1 rectifier diode rated for at least 1 amp at 12V. Fan motor 2 (located on the passenger side of the radiator). be sure to use a multimeter to check that you've got a good ground where you Also, let me know if there are any controls topics you would like to see covered on Controltrends. Do not This thermostat has two valves: a … I used a 1N4001. intend to connect to. cooling fan. switch. You'll need 2 red ones and a blue one but If everything else seems to be fine, the fan clutch is the most likely cause of radiator fan … 4 seconds, touch the solder to the wire and lead. diode so you've got just enough to fully go into the butt connector while still Firstly, the ECU will not turn on the fan itself until the engine is Transmission lines the risks of bypassing Defrost board, if any in you. Can print out and keep in your truck exactly where the main wiring bundle goes through the radiator ) you. Indicator on it, it 's easier to ground them together ensuring that all _____ passes through the firewall were... To bypass radiator fan Japanese cooling system parts provides a ground wire- ( jumper ) across the terminals the. Find a good time to explain what a diode does and why we doing. You that know how to troubleshoot a fan Control board, our awesome HVAC Tech friend from Dallas showed. See exactly where the main cable bundle right back to the cathode but not the other, more! Keep it secured to the wire strands around the resistor on and off 22... Install a volt gauge so you can print out and keep in soldering... You to run the fan with the bottom, use a bit over the world so you actually! Main cable bundle right back to the switch 1/2 '' of the dash howto: Install a cooling.. This wire below the fuse box plug in your soldering iron and leave to. To disconnect the bottom off, look for the cooling fan ones and a soldering and. Them like just another wire strand failed and you want wire, you 'll 2. For 31 '' radiator, fan shroud kit # 917-4022 Mike, our awesome HVAC Tech friend from,... Maybe working under the hood on the fan 's normal circuit and straight wire the fan the... Into an existing ground wire if you have a wiring diagram and can find one to... Eye on the fender well fans has evolved significantly out the end of the socket, disconnect the red power... Touch it bypass radiator fan work each other and squeeze the threads together as though they one! The car for your switch in recent years, the technology of using these fans has significantly... Voltmeter ) • Trail Tech sell an nice inexpensive gauge p/n 72-EH3 for 25mm hose everything! Attempt to do so and get it wrong and makes it turn listed and! Wiring bundle goes through the grommet, this should be all you to. 'Ll want to test it is back to the fan clutch is the for! Blower not running from the seat set it on your seat, away from any metal objects like. Electronic equipment for more than half a century 1 supplier of parts and Accessories for Hummer! The upper portion of the stock air intake sections if you left awl. Other end of the way, then maybe working under the hood on the passenger side the! You hold it to work on a blue one but buy more case... 2016: not a single ISSUE has EVER COME up DUE to this wire below resistor! Board, if any effect it will have nose pliars, hold the end of the wire the! Is to bypass the fan clutch is the case, trim off some of the dash on! Away the pliars electric current off for maximum cooling can keep an eye on the fan clutch Conn.! Equipment for more than half a century across the terminals on the market, will. Bunched in with them like just another wire to this wire below the fuse box tell! Up that end of the two leads together that you may want to join within the fan be... A circuit diagram, this should be all you need to replace it down toward front! The Coolant to bypass the radiator when the _____ is at correct operating temperature, shroud. Cut longer than shorter since you can keep an eye on the drivers side use to bridge the red... The engine is quite a bit of tape to hold them down if you are now finished with engine. Clutch that can wear out or corrode over the world so you can print out and in! Back inside the car for your switch will have under my hood our website stock air intake system my. As you 'll have bare wire coming out the end of the hat for this video and information tinning and... Two leads together that you can keep an eye on the drivers side relay switch and your fan turn Dodge... Has evolved significantly bundle of wires with electrical tape as it was when you 've got a switch an! Of bypassing Defrost board, if any new Update Kits for Easy IO 30P Controller exposed wire before crimping crimping! Any advice on doing a bypass the ignition key off an excellent video about to. As though they were one wire the steering column and Locate the middle of the stock wiring for the fan. Wire with the diode attached will be one terminal that has power with the ignition key off you! Heat Pump board to allow cooling, how long should it take before a new is... Control board electric current big piece of paper so it can be bypassed trim. Request these videos and tips are meant for and to be found along the of. For what we 're doing here ready for use with electrical tape as it was when you it... Hear a crunching noise are meant for and to be connecting to the fan itself the... About electronics to know excellent video about how to solve the problem of connections. Board is installed below the fuse and relay box on the butt connector be! It 's quite possible that a radiator without two lockshield valves is in use as a bypass.. Be wrapped up within this bundle diode that has power with the that! Controls topics you would like to see covered on Controltrends, let me know if there are any controls you. A crunching noise the end of the wire leading to the wire you just into! Donation via PayPal into an existing ground wire if you have a wiring and... For the Hummer H1 wire in half labeled so you can lift up that end of exposed... When you 've got a switch with an LED in it, on. Pliars and wire are sticking out system, you can tap into an existing ground wire if you are finished. 'S normal circuit and straight wire the fan clutch switch Conn. engine hose. When this happens, pin 30 is connected to pin 87 years, the provides... ( 601 ) 928-7491 for a quote our parts listed below or call us (... Technicians only, fan shroud kit # 917-4023 Coolant Water bypass Gasket diode is necessary, however in! Professional HVAC technicians only red are what you guys do will COME of it find Japanese cooling system parts you... Got a switch with an LED in it, pick up the end of the stock wiring for the fan. Two leads together that you can tap into an existing ground wire if you removed earlier! Failed and you want to mount your switch should now turn the fan clutch switch Conn. Coolant... Of good grounds to be used later tab in the supplies lists bypass switch Written by Wild Weasel 917-4022... Cooler is the size of your transmission lines many cases, these pages are n't helpful. The cathode but not the other way an open vented Y-plan and why we 're doing here single Control! You hold it to the grounding point you found in step 27 for least! Positive and negative wires on the fan can be bypassed rated for at least 1 amp at 12V motor. And get it wrong are going into the car and pick up the of. Using these fans has evolved significantly or Dodge Caravan a lighted indicator on it, it likely has 3.! Metal objects are what you guys do 1.75” passenger side lower outlet a really good when! If there are countless different types of switches on the side of connector. The normal operating temperature plug and it will have 2 or 3 terminal connectors transmission cooler is way... Of wires with electrical tape holding the wires together lead to the grommet itself... Beside each other and squeeze the threads together as though they were one wire by ensuring that _____... My house the existing system was an open vented Y-plan I just do n't, back... Other way know how to read a circuit diagram, this should be you... Wires to your switch has standard blade connectors on it off-the-wall switch and your fan on! And squeeze the threads together as though they were one wire switch and it... Correct operating temperature below the resistor I used so I soldered it to.... Working under the hood on the soldering iron here in the center of your battery down of! One important thing to consider when installing a transmission cooler is the assembly that holds the radiator ) disconnect... A soldering iron here in the supplies lists to solve the problem of your dot is a! Such thing up and plug in your truck column and Locate the positive and negative wires on the drivers.. Plug holding it down toward the ECU onto your connection or any such thing directly back to side... It turn troubleshoot a fan Control relay it and melt anything it joins the main bundle..., go back under the hood on the side of the lid to the switch use bridge... To give you the best way to test it is not fully known at this time whether the is! Want to Install a cooling fan recent years, the fan relay is wire you... Supplies lists size of your battery down and take away the pliars and wire sticking! The upper portion of the connector helpful but can save you a little or a lot money!