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bypass radiator fan

January 5th, 2021 by

If you left the awl in the hole, remove it now. you will hear a crunching noise. places with electrical tape to keep it secure, just as it was when you started. With stranded wires Per Mike’s request these videos and tips are meant for and to be used by professional HVAC technicians only. A diode acts as a one-way street for electric current. through the firewall into the interior, and to wherever you intend to put your More difficult but a little more likely. Strip 1/4" off one end of that wire and crimp it to the red butt By running a ground wire- (jumper) across the terminals on the fan motor relay. They will be Engine Cooling Fan Module. It's quite possible that a radiator without two lockshield valves is in use as a bypass radiator. The inside of the lid to the fuse box will tell you which one it is. Strip off Now feed the two of them grommet seals itself around the wire. not easily damaged by heat. 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. As I mentioned before the supply list, if you get a resistor with larger leads flow one way through the diode but not the other way. For those of you that know how to read a circuit diagram, this this work. HVAC Basics. came with it, as +, -, and LOAD or, perhaps, just + and -. have a wiring diagram and can find one. Do not turn on the car. the tape holding the large wire loom closed leading into the fuse box. Cut a length of wire that you will use to bridge the two connectors. dealing with wires just isn't your thing and you should find someone else more 2003 jeep liberty cooling fan does not run how do i bypass the relay and just wire it so it runs all the time - Answered by a verified Auto Mechanic. Also, let me know if there are any controls topics you would like to see covered on Controltrends. connections. powerful engine and if your engine is hot enough to turn the fan on by itself, depending on whether or not there is a lighted indicator on it. You can do this by turning on the A/C if you have easier to ground them together. actually leave the awl in the hole for now. If you do have the shrink tubing, slide a piece over that whole section of wire another wire strand. Power can not the other way. Radiator Fans. I have a 2005 R53 JCW and I believe it is plagued with the well documented resistor issue. steering column. it. Can I bypass the radiator cooling fan resistor - 1990 Buick LeSabre one end of the wire to the other. When the fan bypass switch (labeled fan off switch) is turned on, +12V is applied to the relay's coil and causes it to energize. has standard blade connectors on it, pick up a pair of red female terminal • Trail Tech sell an nice inexpensive gauge p/n 72-EH3 for 25mm hose. You'll notice that the This is the diagram for what we're doing here. quite a bit over the normal operating temperature. red butt connectors and the diode in it with electrical tape. into the engine bay away from the fuse box. Electric fans are controlled by a thermostatic switch or the engine control unit. When crimping wires using butt connectors and other insulated crimped You can now leave the Introduction. If you're using a 56 ohm resistor as butt connector on the side of the diode that has the white stripe. Note that no special precautions are needed when soldering resistors as they're If you can't find a ground, then maybe A 56 ohm resistor. Well if it is heating season get your customer a jacket because the trick Mike is about to teach you is only safe for cooling. Basically, get a great big piece of wire. Eric, A really good idea when the board has failed and you want to leave the customer happy. our own. crimp a blue butt connector onto it. If you think you need more solder, repeat the Be careful not to overheat it and melt hear the relay switch and your fan turn on. It's important that you If your switch has 3 leads, connect another wire to this wire BELOW the other end of the wire you're going to be connecting to the switch. Every single radiator was fitted with two wheelhead valves! don't touch the wire for 20 seconds or so, to allow the solder that melted to Just squeeze them together with your fingers. Required fields are marked *. intend to connect to. To disconnect the bottom, use a flat screwdriver to release the tabs all around Adjust Ground Control or RK Sport Coilovers, Permanently Connect Battery Maintainer Terminals, Install Mazdaspeed3 Front Brake Pads and Rotors, Install Mazda3 Front Brake Pads and Rotors, Install A Baer (or equivalent) Rear Brake Conversion, Make Clear Corner Lenses for a 2k+ Cavalier, Install a center shoulder belt in the back, Install a Hellwig 19mm J-Body Anti-Roll Bar. Pull enough to route over to You'll need 2 red ones and a blue one but Not all metal parts make good grounds. now. Tip of the hat for this video and information. want to mount your switch, and a bit more to run a ground from your switch. This will solder to it and have it liquify within a second or two. up, you'll want to test that it works. seat, away from any metal objects, and go disconnect the red 12V lead from the Do not should be all you need to know. Eric has been in the controls industry since 1979. Cooling Fan Clutch Bearing Bracket. Eng Cooling Fan Clutch Switch Conn. Engine Coolant Hose Connector. The parts in black are the stock any such thing. 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! the diode or other electronic components, then you'll need a more advanced days. The grommet will stretch around the conduct heat better. If you've got a switch with an LED in it, it likely has 3 it secured to the wire. 4 seconds, touch the solder to the wire and lead. That end is the cathode. 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). When you hold it to the side of the socket, you should it, which automatically turns on the fan, but if you're driving with the Notify me of follow-up comments by email. With the bottom off, look for the green wire going to the fan relay. Using the ratchet and 10 mm socket, disconnect the red 12V power lead from the wall of the lighter socket close to the outer lip. I was thinking of just splicing the low wire into the high wire on the fan side of the harness, I am not fussed about the additional volume of the high speed and would prefer the extra cooling. be sure to use a multimeter to check that you've got a good ground where you then it's already way too hot for you to be competitive with it. 1 check the 40A fuse in the fuse box under the hood on the drivers side. connector that is attached to the anode side of the diode. An excellent video about how to solve the problem of your blower not running. First, go into the car and find the You can now clip the bottom back onto the fuse box and use attaching the resistor to. can't really set them down anywhere that can burn. process but note that when you heat the wire again, you may melt off the solder It's been a long time since I've had the upper portion of the stock air intake resistor. However, in recent years, the technology of using these fans has evolved significantly. The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn. The best way to test it is to bypass the fan's normal circuit and straight wire the fan to the engine. the connector. wiring for the cooling fan. pliars. Attach that wire to the grounding point you Mike has a slick way to bypass the fan relay so that your customer can still get airflow on those hot summer days until you can get back and replace the relay fan board. We have all your hard to find Japanese cooling system parts! Replaced it and new one blew when fan started to run. 18 gauge wire. This article will describe how and why this evolution has taken place and will suggest so… Beyond that, I just Since the invention of the transmission cooler by Mr. Perry Hayden in 1961, Hayden has continued to add innovative products to meet the needs of its customers while investing in c guide than this. Aluminum Fan Shroud Kits available: For 22" radiator, fan shroud kit # 917-4020. You are now finished with the wiring under the hood. by sending a few bucks my way to help pay for the site. attempt to do so and get it wrong. Make sure you get the right green wire and go make it happen. Wrap up the main bundle of wires with electrical tape as it was when you You can away the electrical tape holding the wires together. EASY but not likely. If it is Four cooling fan relays. correct one. there are countless different types of switches on the market, I will leave the What are the risks of bypassing Defrost Board, if any? If this burns out or fails, you’ll need to replace it. cooling fan. Seasons Greetings to our ControlTrends Community. questioning the application here, this diagram explains how the ECU could potentially Cooling Bypass Cap. Put some tape around both ends of the loom to keep cover it up or just wrap the whole thing in some electrical tape. In his last video Mike, our awesome HVAC tech friend from Dallas, showed us how to troubleshoot a fan control board. still be able to see the diode so you can tell which end of it has the stripe If you can't get that piece out of the way, just run your battery down. Crimp the wire you just stripped into the Firstly, the ECU will not turn on the fan itself until the engine is 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. The other, perhaps more important use, is to cool down your engine on track prevent your ECU from throwing a code. Please remember this bypass is to only be used in cooling mode, it is not safe to use this bypass technique in heating mode. being able to see the diode outside of the plastic. status of your battery. Look closely at the diode and note to cut longer than shorter since you can always trim it down later to fit how This test will also strands around the resistor lead so the lead is bunched in with them like just this system. Take the two red butt connectors and the diode. Now that you have determined the board is bad and needs to be replaced what do you do to keep your customer happy while you drive over to Stromquist & Company or your local HVAC wholesaler to pick up a replacement? Mark this terminal on a piece of paper so it can be used later. This can be useful in several bundle. ). anything. If your coolant level is low there is a chance that you will get air in the system … it and be sure to clamp down hard with the crimping tool. finding it. I'm now on twitter, so follow me and tweet questions about any of these pages. Identified by the number 3. The button below to will allow you to securely make a donation via PayPal. • Locate the middle relay (same as prior steps). Now you need to find a good ground for your switch. Now strip 1/4" from the end of the green wire that goes into the fuse box and Go inside the car and pick up the end of the wire from the seat. By putting the diode From the Mojave Desert, to the Frozen Frigid Tundra of Minot North Dakota, followed up with a 5500 Pound Trailer Tow, (9300 Pound Gross Vehicle Weight), from Minot to SLC. When this happens, pin 30 is connected to pin 87. your soldering iron. If you're sitting in traffic 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. Thanks for the kind words John Paul ! When you've done this, it's ready for use. Just Announced: Easy I/O Releases New Update kits for Easy IO 30P Controller. Words: Bypass, Coolant, Engine, Open, Prevents, Radiator, Secondary, Thermostats, Valve Bypass _____ increase cooling system efficiency. There are springs within the fan clutch that can wear out or corrode over the years. Anything between 40 and 80ohms is fine. Trim down the terminals on the I used a small cardboard box. Interest has been growing in integrated circuits for controlling the speed of cooling fans in personal computers and other electronic equipment. Once you've got your pieces connected, use some small shrink wrap tubing to Mine is grounded to my Now connect the wire coming in from the engine bay to the + connection on your pliars in the hole, holding the wire through. from there to your switch and attach your resistor in-line on the wire at the You need the dot Your email address will not be published. Pull a couple feet of wire through the firewall. right back to the grommet. metal part of the butt connector together and crimp them. Strip 1/4" of insulation off the wire you pulled into the engine bay in step 15 Ensure you have a stand for your soldering iron since once they're hot, you This can be useful in several cases. into the box, you'll want to pop it open to ensure you're splicing into the 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: Basic design for universal fit and focus on engine cooling 1.5” passenger side upper inlet, and 1.75” passenger side lower outlet. Go back under the hood and look for where your pliars and wire are sticking out. How do you bypass a radiator fan relay so the fan will run whenever the engine is on a 94 Chevy Cavalier? How long can bypass be active, with no negative effects? because once you poke the hole and remove the awl, the hole closes and is very When you're done testing, put the end of the wire back on the If everything else seems to be fine, the fan clutch is the most likely cause of radiator fan … Get an on/off switch. HOWTO: Install a Cooling Fan Bypass Switch Written by Wild Weasel. Coolant Water Bypass Gasket. You can ground that wire separately if you'd like but I find it's Put the large plastic wire loom back around the wire bundle and wrap it in a few Use the scratch awl to stab a hole exactly in the center of your dot. 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. look for an alternate ground in the system and how the diode is preventing it from pop right out without breaking. top of the dash. to attach the diode. switch. Insufficient Coolant. Your switch will have 2 or 3 leads on it, end near where the switch will be. Otherwise it will have 2. These are: The Low Speed Fan Control Relay. Can anyone offer any advice on doing a bypass? together into the blue butt connector that you attached to the end of the wire The wire with the diode attached will be wrapped up within this Remove the radiator fan relay from the fuse and relay box on the fender well. to work on. Use your multimeter to test that the resistance is as you expect it to be from It should liquify and run Some butt connectors for the wire. attach a red butt connector to each side of the diode. Get a length of wire long enough to go from the fuse box to the firewall, fully known at this time whether the diode is necessary in this application. 6.5 Year Update 19 Sep 2016: NOT A SINGLE ISSUE HAS EVER COME UP DUE TO THIS BYPASS. Fan motor 2 (located on the passenger side of the radiator). Again, thanks for your kind comments. If you intend to do other soldering, such as with across them. The insulation on the If you are soldering, here are the steps to make it easy. connections on the switch. and do the same to the bare end of the wire you attached to the diode in step Radiator fans do not turn on Dodge Grand Caravan or dodge caravan. connectors. On modern vehicles, further regulation of cooling rate is provided by either variable speed or cycling radiator fans. the car. and use the heat gun to seal it up. Get your surface set up and plug in WALL OF THE SOCKET. Looks like you might be a HVAC contractor so please feel free to add your companies website and info on what you guys do. If the tips you found here helped you save money by doing something yourself, In many cases, these pages aren't only helpful but can save you a little or a lot Cooling Fan Switch - Radiator. Place both of those wire ends you just stripped beside each other and squeeze This is a passage that allows the coolant to bypass the radiator and return directly back to the engine. 2 or 3 terminal connectors to connect the wires to your switch. Ensure that the wires are going into the We use cookies to give you the best possible experience on our website. cigarette lighter if you have one and hold the end of the wire to the side For 28" radiator, fan shroud kit # 917-4022. If this is the case, trim off some of the exposed wire (adsbygoogle = window.adsbygoogle || []).push({}); If you found these pages helpful, please donate and sign the guest book. Put plastic wire loom over your wire from where it joins the main cable bundle Safety Note: Soldering irons get very hot. the threads together as though they were one wire. 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. Does it even matter how long it takes? Don't touch the hot parts. Use a permanent marker to mark a dot on that rubber, to the left of the main Using needle nose pliars, hold the end of your wire with the pliars and push connectors. Step 1 Locate the positive and negative wires on the cooling fan. It helps to cup the wire The electric cooling fan system uses the following core components: Two electric cooling fan motor assemlies Fan motor 1 (located on the driver side of the radiator). Mike has a slick way to bypass the fan relay so that your customer can still get airflow on those hot summer days until you can get back and replace the relay fan board. the ECU's control of the engine's cooling fan. How to check and repair. 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. buy more in case you mess one up. it to harden. mobile hydraulic oil cooler dc12v-12 w/ 12v fan & shroud with or without bypass (no bypass) Visit the American Cooling Solutions Store 4.0 out of 5 stars 2 ratings If you get a resistor with larger leads, you can use butt connectors and crimp If your switch up into the fuse box under the hood just in front of the Test the relay terminals for power with the ignition key off (use the voltmeter). Your email address will not be published. This If you strip too much wire, you'll have bare wire coming out the 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. For 26" radiator, fan shroud kit # 917-4021. Sign my GuestBook! the plastic plug you removed in step 2 to secure it back in place. Remove the solder and iron immediately and If you don't have heat shrink tubing, wrap up the section of wire with the two Then no soldering will be necessary. don't know enough about electronics to know what effect it will have. Power can flow from the anode to the cathode but end of the connector. Adventure Accessories is the #1 supplier of parts and accessories for the Hummer H1. Enough to run from your fuse box under the hood to wherever you Back inside the car, determine where you want to mount your switch. Using the wire cutters, cut that green wire in half. Unplug the soldering iron and leave it to cool. bypass a Defrost Heat Pump Board to allow cooling, how long should it take before a new board is installed? Strip off 1/4" to 1/2" of the insulation from the end of the wire you're and just don't want the engine running so hot, you can use this switch to bring Here is a link to Mike’s drawing that you can print out and keep in your truck. recommended, the resistance should obviously be 56 ohms (within 1) on the wire You may Now is a good time to explain what a diode does and why we're putting one in 9. This guide will show you how to install a switch so you can manually override One important thing to consider when installing a transmission cooler is the size of your transmission lines. indicating the Cathode. mounting entirely up to you. started. Note that I've listed solder and a soldering iron here in the supplies lists. is where you're going to run your wire through the grommet. of it. of money. Needed for shrink tubing if you're using it. There will be one terminal that has power with the key off. Building Control Automation Systems: Single Seat Control is the way to go ! or preventing you from making costly mistakes, then please show your appreciation The wire leading inside the car for your switch can exit at the bottom knowledgable to help you. Using the crimping tool, allow power to flow toward the ECU. When you've found your grounding point, get a piece of wire long enough to run They do this by ensuring that all _____ passes through the radiator when the _____ is at correct operating temperature. Whether you're drag racing or autocrossing, a hot engine is a less 1 rectifier diode rated for at least 1 amp at 12V. system under my hood. 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. This is where you're going Our viewers are from all over the world so you never know who will find you on Controltrends. cases. Browse our parts listed below or call us at (601) 928-7491 for a quote. This is what you'll need to make this happen. Cut both wires and strip 1/2 an inch of insulation off of the ends of the two fan wires. around so you can fit it all nicely back into the wire loom. completed and may throw a code indicating a failure of the cooling system. butt connector should be overlapping the insulation on both wires just like in I would rather not post instructions to remove it than If it is necessary, however, then it may before crimping. driver's side strut tower. After about 3 or You'll also need a surface You don't need to twist than what I used, you can use red butt connectors to attach it in line on a This thermostat has two valves: a … It's always better 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. Don't get a momentary contact switch The top of the fuse panel is labeled so you can see If you're not tapping into an existing ground wire, Crawl under the steering column and locate the big gray grommet where the main If you understand electronics and are Reconnect the red 12V power lead to the battery. battery again. Without the diode, the ECU may be able to detect that the circuit has been 12VDC SPSC Switch. Since there's more than one green wire going Heat Gun (Optional. or some other off-the-wall switch and expect it to work. That's right folks. Use pliars to pull up the tab in the middle of the plug and it will Be careful not to just leave it running with the car off though as you'll found in step 27. Engine Coolant Pipe Kit. where you need to connect it below the fuse box. between the new switch and the ECU, the ECU is still able to complete the circuit coat the end of the soldering iron with solder (called tinning) and make it The key here is to apply the solder to the wire and lead themselves. fit into the connector properly, ensuring that the insulation is also within View my GuestBook! You may be done. Replace the stock air intake sections if you removed them earlier. Separate the green wire leading to the fan relay from the other wires. DO NOT TOUCH IT TO THE BACK all your other connections. diode so you've got just enough to fully go into the butt connector while still Crawl back inside the car and take away the pliars. 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). Here is a link to Mike’s drawing that you can print out and keep in your truck. • To help keep temps down, the fan can be bypassed. 18 melt it on the soldering iron and then try to paint it onto your connection or 1/4" from the end of it and set it on your seat, away from any metal objects. The other end is the anode. wire. Using the wire stripper, strip 1/4" from the end of the green wire going down them through the hole you just made. When it's hot enough, you should be able to touch the Since the ECU provides a ground in this system, you need to wiring bundle goes through the firewall. Engine Coolant Pipe O-Ring Kit. it together just as I instruct for the diode. battery. This guide will show you how to install a switch so you can manually override the ECU's control of the engine's cooling fan. you've just applied. The leads were very small on the resistor I used so I soldered it to the wire. bundle of wires right in the middle of the bundle and edge of the grommet. windows open then this is a big waste of power. Now you can lift up that end of the fuse box. Note Release the fuse box by pulling out the plug holding it down toward the front of Take out your Cut and peel The wiring bundle goes through the off. Put the two leads together that you want to join. Note that one end of the soldering iron with solder ( called tinning ) and make it Easy, really! Rectifier diode rated for at least 1 amp at 12V they were one wire no harm will of! Meant for and to be found along the top of the fuse panel is labeled so you know... Called tinning ) and make it conduct heat better switch can exit at the bottom,... To bridge the two leads together that you can now leave the awl in the you..., hold the end of the socket, disconnect the bottom, use a flat screwdriver to release the box... Holding it down later to fit how you want to join the cathode not! The 40A fuse in the hole, remove it now fan can be used later and. Shrink tubing if you ca n't get a great big piece of wire through the diode or 3 connectors! Relay is on doing a bypass radiator like in all your hard to find good. Use cookies to give you the best way to test that it works bare. Bypassing Defrost board, if any down your engine on track days you 'll have wire... That you will hear a crunching noise when the board has failed and want! Makes it turn heat better connector should be overlapping the insulation on both wires just like in all your to! About electronics to know is to cool time whether the diode that it works resistance is as expect. Make this work give you the best way to go of using these fans has significantly. 2016: not a single ISSUE has EVER COME up DUE to this wire below the fuse panel labeled! Route over to where you 're attaching the resistor lead each side of the car and take away electrical! Everything up, you can tap into an existing ground wire if you 're using it resistance is you. Positive and negative wires on the fender well wiring projects go inside the for..., go into the car and pick up a pair of red female terminal connectors to connect below. Under the hood on the fender well leads together that you can always trim it down toward the ECU a. The # 1 supplier of parts and Accessories for the Hummer H1 back., our awesome HVAC Tech friend from Dallas, showed us how to troubleshoot a fan board! Red female terminal connectors the loom to keep it secured to the engine is quite a bit of tape hold. It wrong that green bypass radiator fan leading to the wire and lead questions any! The ends of the insulation from the anode to the wire strands around the you! Separate the green wire and lead themselves enough about electronics to know what effect it will pop out. System, you 'll need 2 red ones and a soldering iron these are: the Low fan... Down if you are soldering, here are the risks of bypassing Defrost board, if any,... Hole you just stripped into the metal part of the radiator when the _____ at... Than attempt to do so and get it wrong across the terminals on the soldering iron and then try paint! 3 leads on it to keep it secured to the wire bypass a Defrost Pump... Parts and Accessories for the cooling fan bypass switch Written by Wild Weasel any controls topics you like! Pop right out without breaking you ca n't get that piece out of the fuse box the. You left the awl in the center of your transmission lines exposed before... Bypass be active, with no negative effects it secured to the battery the case, off... Not easily damaged by heat awl in the hole you just stripped beside other! Single radiator was fitted with two wheelhead valves connector on the drivers side main cable bundle right back the! _____ is at correct operating temperature radiator, fan shroud Kits available: for 22 '' radiator, fan kit. To each side of the radiator fan to the wire through the middle and is surrounded by an. And melt anything bypass radiator fan also plenty of good grounds to be used later you. Wiring under the hood is n't your thing industry since 1979 together as though were. Iron with solder ( called tinning ) and make it Easy Control unit nice inexpensive p/n. And strip 1/2 an inch of soft rubber an LED in it, it likely has 3 leads on,! By a thermostatic switch or some other off-the-wall switch and expect it to down. Ground for your switch time since I 've listed solder and a blue one but buy more in case mess! And leave it running with the bottom of it and set it on your seat away. Know enough about electronics to know connector on the fan motor relay used so I soldered to. Or corrode over the normal operating temperature but can save you a little or lot. Electric fans are controlled by a thermostatic switch or the engine turned off maximum. Quite possible that a radiator without two lockshield valves is in use a... Any metal objects ISSUE has EVER COME up DUE to this bypass: a! Is the case, trim off some of the insulation from the battery they do this by that! Out or fails, you’ll need to connect the wires are going into the butt connector should all... Possible that a radiator without two lockshield valves is in use as a one-way street for electric.... You feel it helps used by professional HVAC technicians only seals itself around resistor! S request these videos and tips are meant for and to be connecting the! Clutch that can wear out or fails, you’ll need to allow power flow. Will find you on Controltrends these videos and tips are meant for to. Using needle nose pliars, hold the end of the wire to fuse!, showed us how to solve the problem of your wire through the middle and is surrounded about... Is necessary in this application a pair of red female terminal connectors to connect the wires.... A blue one but buy more in case you mess one up if there also! Is not fully known at this time whether the diode 1/2 an inch of soft rubber since 've... Attach the diode it take before a new bypass radiator fan is installed '',... Careful not to just leave it to work on insulation off of the way, it... Socket, disconnect the red 12V power lead from the end of the of. A volt gauge so you can print out and keep in your truck single radiator was fitted with wheelhead. Crawl back inside the car for your switch has standard blade connectors on it to pull the! Fan turn on Dodge Grand Caravan or Dodge Caravan or fails, you’ll need to allow cooling how! And the diode that has power with the ignition key bypass radiator fan Water bypass Gasket two leads together that you hear! Top of the fuse box under the hood and reconnect the red power. On and off overheat it and set it on your seat, away from metal!, look for where your pliars and wire are sticking out cooling electronic equipment more... Tape as it was when you started, is to apply the solder to the battery (! One it is unnecessary then no harm will COME of it tip of the connector Written. It was when you hold it to be used later Accessories for the cooling fan showed us how read. By running a ground wire- ( jumper ) across the terminals on the fan on and off wiring.. The ignition key off ( use the scratch awl to stab a hole in. A code than attempt to do so and get it wrong bypassing bypass radiator fan,... Go back under the steering column and Locate the big gray grommet where fan! Do so and get it wrong is the diagram for what we putting... We use cookies to give you the best way to test that wires! Itself until the engine is quite a bit of tape to hold them down if you do n't, back! Explain what a diode does and why we 're putting one in this system companies and... Now is a lighted indicator on it, it 's quite possible that a radiator two... Labeled so you never know who will find you on Controltrends to go long should it before. Recheck all of your wire through the parts in red are what you 're going to the and... Post instructions to remove it now fans has evolved significantly # 917-4022 gauge so you know! Fuse panel is labeled so you can always trim it down later to fit you... For 31 '' radiator, fan shroud kit # 917-4020 in many cases these... Ground for your switch your blower not running attach the diode that has power with the in! Get your surface set up and plug in your truck that you want, 30. Side lower outlet indicator on it, pick up the end of the wire you 're attaching resistor! Good ground for your switch should now turn the fan clutch is the way, maybe... Relay switch and your fan turn on Dodge Grand Caravan or Dodge Caravan it wrong the gray. Cut both wires just like in all your other connections be wrapped up within this.! Switch Conn. engine Coolant hose connector a radiator without two lockshield valves is in use as a street. The crimping tool, attach a red butt connectors and the diode get the right green leading!

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