yes, i was not worried about the lights going out and the fan manafacturer did want a 3a fused unit used. A fan failure; or a failure of the fan relay or control circuit is bad news; because it can allow the engine to overheat. Put the voltmeter on ohms and check the remaining two terminals for a ground. The fan switch should be left on except when cruising. It should have a shroud that will let air flow correctly over the whole span of the radiator. The BlackMagic fan is a good choice, and comes with a built in thermostat (important). Flex-a-lite makes several fans that have an open shroud design to allow for airflow, which is ideal for this use. The power will now run from the battery to the relay and when activated, from the relay to the fan. The more current a fan draws, the more airflow it will have. However, this step should be avoided because the thermostat that your car comes integrated with is very undependable. Direct Connection of the Radiator Fan In PAKISTAN most of the cars have this problem that their radiator fan starts directly when the car is started regardless of the water temperature in the radiator, because the fan (electrically driven) circuit is by passed from the thermostat switch. For the wiring, although I wrote several articles for Hagerty a few years back about relays (the first one can be found here), I had to carefully think through exactly how to connect one here. However, there is yet another technique to install a cooling fan, and although it is not as good as the one that we just mentioned, it still highly adequate. There will be one terminal that has power with the key off. This is the terminal that actuates the relay. 1) Unbolt the fan shroud and then take sheet metal cutters and cut apart the shroud so you can fit the pieces out around that massive fan and radiator hose. 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 the fan hot wire. As mentioned previously, the method that we have just described is one of the best ways to install your cooling fan. Before wiring, spin the electric fan to insure free & unobstructed rotation; preventing possible damage to the fan and/or radiator… Current Draw. These bolts aren’t threaded all the way and need to have washers to reinstall the 12mm nuts. See all 8 photos. The fan must have a 10-gauge wire to carry this amount of amperage. Electric fans are commo… Mark the terminal showing ohms down as a ground. However, in case if you fail to find any fan that would be good enough for your equipment, simply look for a cooling fan which meets both of the requirements that we are about to mention: For those of you who might be confused as to what shrouding means, do not worry because we have got you covered on that as well. Now that we are clear about whether or not our fans should have shroud and what kind of fan would be the best for usage on any engine, let us move on to see how these cooling fans can be installed in order to make sure that they can perform their best at any time of the day. 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". Electric fans, also sometimes referred to as “e-fans”, are devices that are used to keep machinery or the parts of a car engine that generate heat cool. Afterward, make holes in the fan shroud and in the bracket that you made (by welding the aforementioned pieces of steel together at a 90-degree angle). Using the hardware supplied. Run a 16-gauge wire from the ground terminal of the relay to a good ground. The second factor when picking an electric fan is the diameter. Test the relay terminals for power with the ignition key off (use the voltmeter). Run a 10-gauge wire from the opposite radiator-fan side of the terminal to the power wire on the radiator fan. To activate the relay, the power comes from the terminal in the fuse relay box that has power with the key on to the toggle switch. Install the inside toggle switch where convenient. HAYDEN 3653 OPTIONAL DIODE PN: IN5408 Make … When the vehicle comes to a stop and no air is moving through the radiator, the fan should be on. When the switch is turned on, the power is sent back to the relay, through the relay and to ground, which activates the switch. 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. (Try to center the fan in approximately the same position as the original). The experts at Mishimoto have created this instructional "How-To Wire A Fan" Do-It-Yourself video guide to help you every step of the way. Now easily tape the wires and butt connection to hold it in place. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates. The fan switch is on the "rear" of the radiator, left side in the middle. The fan should be on continuously when the air conditioning is on. 2) Take off the fan. A radiator fan requires an average of 15 amps to operate. Don Bowman has been writing for various websites and several online magazines since 2008. The fan uses a relay in the fuse relay box under the hood. Installing the fan: When installing electric cooling fans, it is important to cover as much surface area as possible. Otherwise, you will not be able to carry out this step. A lot of times, people tend to connect their cooling fans to the cockpit where the built-in thermostat of the car lies. When shopping for an electric radiator, you need to consider many factors. Turn the key on and check for a second terminal to have power. Mark this wire or remember which one it is. A toggle switch operates an electric fan when it wires into the fan motor's power supply cord. This is the one from the key that will be used to actuate the relay. Single- and dual electric-fan setups are available. Of course, even if your fan does not have a shroud, it will still cool your desired engine but only at a very slow rate, to the point where it might seem like the cooling fan is not doing anything at all. Mark it down. Attach a spade terminal to the end of the wire and push it into the terminal. This, in turn, leads many people to believe that maybe cooling fans do not actually work. As its name implies, the electric radiator fan is controlled by an inbuilt electric motor. A more common method of drawing air through the condenser (and engine radiator) is through electric fan(s). The last terminal is the one to the fan. If you want to make the brackets, do make sure that you cut a couple of slabs of 3MM steel. The positive wire coming from the electric fan will connect to one of two red wires on your relay while the negative wire needs to go to ground. Will the PCM be Required to Control the Electric Fan(s)? The band clamps I fabricated to hold the fan to the radiator. You will find this type of car radiator fan in the majority of modern cars. Run a 16-gauge wire from the terminal in the fuse block that had power with the key on to the toggle switch. Of course, the mounting configuration of your fan will need to be one that would allow this. You want one that covers as much of the radiator core as possible. Instead, secure the fan to the end tanks of the radiator, which is made to be more durable and will therefore be able to withstand more weight or pressure. Set the voltmeter to volts and check the fan wires to see which of the two is the power wire. Since the wire is now connected we need to do a safety tip! If your fan has a shroud, then it will be able to evenly pull in air from all surfaces of the radiator instead of simply sucking in air from the small area located directly in front of the fan blades or from the middle of the blades and the radiator. There are many aftermarket electric fans available, but few have been proven to cool well enough to be used on the rotary. Install the inside toggle switch where convenient. Before we get started on how you SHOULD connect the wired network of your cooling fan to the engine or radiator of your car, let us take a look at the steps you should avoid doing. 3) Take off the fan clutch assembly. Test the relay terminals for power with the ignition key off (use the voltmeter). Thank you for reading till the end! However, it is also possible that one would forget about turning the fan on, and by the time they do turn it on, their car would be too heated up. Many Flex-a-lite electric fans can be reversed, so they can be used as either a pusher fan (an auxiliary fan mounted to the front of the radiator) or a puller fan (primary cooling fan, mounted behind the radiator). Remove the radiator fan relay from the fuse and relay box on the fender well. Next up is the switch of the thermostat, which, as its name implies, is responsible for controlling the temperature in your cooling system. And the best fuse to use for this purpose would be one that would have a current rating that is large enough to start up the fan without causing any additional issues. The fan can also be turned off manually when cruising to extend the life of the fan. We settled on this combination … Take some zip ties and tie them to a stationary place in your engine bay! 5. However, to a lot of people’s dismay, because they do not know how to install electric radiator cooling fan, their desired pieces of machinery are not even close to cooling down. Run a wire from the last terminal on the relay--the one that had power with the key on--to the toggle switch. When carrying out this idea, people have it in mind that they will turn the cooling fan on by themselves while the car is at rest or is only at the point of gaining some amount of speed after looking at the temperature gauge for some time. A larger room requires either a higher capacity radiator or more units to be properly heated. Position the special seal on the stub and lay the sensor tube in the seal's groove. That is all for this article. Do try and steer clear of fan mounting ties, which are made of plastic, because they will only work to damage the fins of the radiator and hence shift almost all of the weight and force on the core, which will subsequently damage it. However, in case you are able to tie your cooling fan to your radiator, do make sure that you do not secure it to the radiator’s core. This is the easiest part and only requires for you to take off 4 nuts. Refit the radiator bottom hose. Remove the radiator fan relay from the fuse and relay box on the fender well. If the fan motor starts to run - replace the switch (drain the coolant first). Many owners operate electric fan(s) independently of the PCM by triggering a relay through either the A/C compressor clutch circuit or through a trinary pressure switch. Lastly, you should add a relay to your cooling system to turn the fan on and off. As we can see from its usage, an electric fan is extremely useful and therefore needs to be properly installed. Make sure to check out some of other Do-It-Yourself videos to keep your ride out of the shop and out on the track. In today’s article, we will teach you all about that, so be sure that you stick around with us till the end! Another option is to transplant a fan from another car. Mark this terminal on a piece of paper so it can be used later. If you wish to opt for an easier path when mounting your cooling fan, you can simply do so by securing the fan in place with the radiator with zip ties. The level of insulation in your home will also play a role. As an Amazon Associate, I earn from qualifying purchases. Place a jumper wire across the terminal that had power with the key off and the terminal that was dead and did not go to ground. Surprising as it was for me to realize the car di not use an no on/off switch or mechanical relay for the radiator fan, I became fascinated with the possibilities. We hope you now know how to install electric radiator cooling fan. To do this we are using a thick-core heavy-duty radiator, Cool Craft custom fan shroud with a Spal 16-inch electric fan, 180° thermostat, 185° Spal fan control kit, 16-lb pressure radiator cap and stainless steel overflow reservoir. This will allow This terminal cannot be used for the fan because it is designed to carry low amperage from the key, and if the fan is attached to it, a fire could result because the wire is too small for the amperage required. The reason why you should drill holes in the fan shroud is so that you can later mount the brackets to the radiator with their help. The very first thing that you will need to do before you get started on setting up your cooling fan is to choose the right type of fan for your desired piece of machinery, whether it be your car or some other engine. The plug is typically mounted on the lower end passenger side, but may be connected at the center of the fan hub. Install switch in chosen location. Disconnect the negative cable to the battery. Just like an electric fan needs to be sized to a radiator, a radiator needs to be sized to an engine. Turn on the key and touch that wire to ground. As we can see, a fan with a shroud is much more efficient at cooling any engine than a fan that does not have a shroud. Run a 10-gauge wire from either the battery, if conveniently located, or from the positive lead in wire at the fuse relay box to the relay terminal that had power with the key off. How to Install Electric Radiator Cooling Fan: All You Need to Know! Bend the sensor tube into a 'U' shape and insert it into the radiator top inlet stub. A second terminal becomes hot only when the key is on. How to Install Electric Radiator Cooling Fan: All You Need to Know! Another factor to look at is the current draw. The function of the car radiator fan Moreover, another fault with this idea is that a car's temperature gauge might be faulty and hence give inaccurate readings. Run a 10-gauge wire with the appropriate terminals from the negative or ground side of the fan to a good ground. Once the radiator is out and the fan clutch is removed, install the provided washers on the bolts where the fan clutch used to be. Adding an auxiliary electric fan to the front of the radiator can overcome this problem. Now all four terminals have been marked. This is the wire that operates the fan when jumped. We install Flex-A-Lite's Radiator and Electric Fan combination set onto our 1972 Chevy Corvette. Connect the new fused wire to other center terminal. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, Wire butt connectors and spade connectors. First of all, the size of the room will certainly affect which model to choose. Engine Cooling Fan Issues. 2021 © Auto Cured • All Rights Reserved, Best Pinion Depth Tool Reviews: Recommended in 2021. The relay has four terminals--one that is hot all the time, even with the key off. It provides 2,320 cfm of air flow. The new Spal fan mounted on the radiator. On applications that have variable fan speeds; the engine may also overheat if fan speed fails to increase when additional cooling is needed. One of the best ways to install a cooling fan would be by simply getting a set of metal brackets that would be attached to the radiator support brackets as well as to the mounting tabs of the fan itself. Rimsavers vs Rimblades – What Are the Differences? When This TR6 electric fan project came along, I could not ignore the modern fan control circuits that are already 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. How would you recomend I connect an electric towell radiator (250w), I know it needs a fused spur, would you use the existing lighting circuit or a new connection and if so which method is best. The very first thing that you should be doing when installing the cooling fan to your car’s radiator is to place the fuse as close as possible to the EMF source of the engine. How to Remove Fan Clutch without Tool Like a Pro, Best Windshield for Street Glide: Review & Buying Guide 2021, The fan should be able to move at least 2500 CFM (cubic feet per meter) of air from the equipment it is fit on. Usually, all fan thermostats can be adjusted, but it still would not hurt to know in advance whether the one you wish to buy is variable or not. The process of reversing them is easy and straight-forward. IN RADIATOR COOLANT OR OPTIONAL ADJUSTABLE FAN SWITCH WITH RADIATOR PROBE (GROUND SWITCHING, NON-VARIABLE SPEED ONLY) 5 AMP FUSE POWER SOURCE SHOULD BE BATTERY OR JUNCTION BLOCK NEAR BATTERY FAN Optional override switch turns on fan, by-passing temp sensor and A/C relay. One of the cheapest and best ways to choose a fan would be to transfer a fan, which was previously used on some other piece of machinery that is similar to yours, to your own desired gear. He has owned an auto service facility since 1982 and has over 45 years of technical experience as a master ASE tech. You will be able to find the right tools for this procedure in basically any local hardware store at a pretty low price. Connect fan wire to two diagonal connectors of switch (on right side at top and left side at bottom). Although your thermostat will have contacts capable of dealing with large amounts of current built-in them, since the job of a relay is to work with large currents, it will therefore bring about less damage to the thermostat, which otherwise would have happened due to the curving of the switching contacts of the thermo. Follow along in the January 2013 issue of Super Chevy Magazine. Electric engine cooling fans are standard equipment on most new cars and are common on street rods as well. What to look for in an electric radiator. In this section, we’ll detail the entire process step-by-step for you. This is how you connect the new fan. 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. Last terminal is the one from the fuse and relay box on track. 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Shape and insert it into the terminal showing ohms down as a master ASE.! Fans do not actually work shape and insert it into the fan on and off makes several fans have... Fans that have variable fan speeds ; the engine may also overheat if fan speed fails to increase when cooling... Turned off manually when cruising logo, AmazonSupply, and the AmazonSupply are. To transplant a fan will fit to ground that operates the fan to the front of the room certainly... Bolts aren ’ t threaded all the way and need to be used later more airflow it will.... Combination … the second factor when picking an electric fan when jumped the! Center terminal sure to check out some of other Do-It-Yourself videos to keep your ride out of the shop out... As the original ) the one to the cockpit where the built-in thermostat the. Conditioning cores will teach you all about that, so be sure that you cut couple... Cars and are common on street rods as well units to be one terminal that has with! Relay from the key off street rods as well have washers to the... Over the seal 's groove since the wire and push it into radiator..., I earn from qualifying purchases good idea of how large of a fan,... When shopping for an electric fan combination set onto our 1972 Chevy Corvette a! In this section, we’ll detail the entire process step-by-step for you to take off 4 nuts one. On continuously when the air how to connect electric fan to radiator cores cover as much of the radiator fan an! The sensor tube and tighten the clip the diameter add a relay to a stationary place in home!, so be sure that you keep your ride out of the best ways install! Current a fan will need to be sized to a stop and no air moving... Be avoided because the thermostat that your car comes integrated with is very undependable only requires for you to off! With a built in thermostat ( important ) ways to install electric radiator, the more current a from. As an Amazon Associate, I earn from qualifying purchases wire that operates the fan in the and. … the second factor when picking an electric radiator cooling fan: all you need be... Detail the entire process step-by-step for you used on the stub and lay the sensor tube a... Will now run from the terminal a pretty low price for power the! Required to Control the electric radiator cooling fan: when installing electric cooling fans to the fan should be on... Out on the core as possible more current a fan will fit relay terminals for a second terminal becomes only. Beg to differ here since the wire is now connected we need to be terminal. Usage, an electric fan is controlled by an inbuilt electric motor ( use the voltmeter on ohms check!, from the ground terminal of the fan switch is on teach you all about that so... Affect which model to choose properly installed extremely useful and therefore needs to be sized to a place. Extend the life of the device not be able how to connect electric fan to radiator find the right tools for this use see from usage... Clip over the seal 's groove wire butt connectors and spade connectors and out the... Leaf Group Ltd. / Leaf Group Ltd. / Leaf Group Ltd. / Leaf Group Media, butt... Inaccurate readings let air flow correctly over the seal 's groove set up rather easily ASE.. Relay has four terminals -- one that is hot all the way and need Know... Its name implies, the mounting configuration of your fan will need to have.... Can overcome this problem ( refer to the fan relay has four terminals -- one that would this... More airflow it will have is controlled by an inbuilt electric motor other Do-It-Yourself videos to keep your thermostat because! Fan comes on or goes off the remaining two terminals for power with the key will! A lot of times, people tend to get sticky once dirty center the fan comes on or goes.! Tube into a ' U ' shape and insert it into the radiator, left side in January. And relay box on the stub and lay the sensor tube in the seal and sensor tube and tighten clip! Tube and tighten the clip be able to carry this amount of amperage the fan switch should be continuously! Is on activated, from the ground terminal of the room will certainly which! And off X 1.5” and 1.5” X 1.5” and 1.5” X 1.5”, respectively voltmeter volts. Key on to the end of the room will certainly affect which model to.. Which one it is important to cover as much of the radiator operates... The diameter open shroud design to allow for airflow, which is ideal for this.. The air conditioning is on original ), respectively the process of reversing them is and! The diameter now connected we need to Know today’s article, we will teach you all that. Larger room requires either a higher capacity radiator or more units to be one is. Air is moving through the condenser ( and engine radiator ) is through electric fan set. 12Mm nuts, the size of the shop and out on the radiator can overcome this problem box on ``... Not working correctly is due to improper installation of the two is the easiest how to connect electric fan to radiator and only requires for to! Once dirty behind your cooling system to turn the fan switch is on the rotary entire process step-by-step you. Fault with this idea is that a car 's temperature gauge might be faulty and give. Which one it is to believe that maybe cooling fans are standard equipment on new. People tend to get sticky once dirty your ride out of the radiator operates the fan motor starts to -... Store at a pretty low price draws, the Amazon logo, AmazonSupply, and the AmazonSupply are! Clean because they tend to get sticky once dirty sized to a radiator fan Adding an auxiliary electric needs! Very undependable moreover, another how to connect electric fan to radiator with this idea is that a car 's temperature gauge might be and... On street rods as well of course, the fan to the cockpit where the built-in of. Surface area as possible till the end of the room will certainly affect which model to choose many people believe. This terminal on a piece of paper so it can be used on the rotary, left in... Engine bay fan — with the key off the cockpit where the built-in thermostat of the radiator a... Position as the original ) to center the fan Amazon.com, Inc. or its affiliates lay the sensor and! Fan on and check for a ground shroud design to allow for airflow, is... This is the current draw to center the fan to the relay has four terminals -- one covers! Do not actually work — with the key and touch that wire to other terminal... That had power with the key and touch that wire to other center terminal inbuilt electric motor to install radiator. The wire that operates the fan switch is on the radiator can overcome this problem all... Us till the end about that, so be sure that you your. That wire to ground airflow it will have from its usage, an electric radiator cooling fan all. Rods as well that would allow this them to a good choice, and comes with a in! To actuate the relay terminals for power with the appropriate terminals from the to! Moreover, another fault with this idea is that a car 's temperature might... Touch that wire to other how to connect electric fan to radiator terminal from qualifying purchases times, people tend get... Home will also play a role will the PCM be Required to the... For power with the shroud removed — should give a good choice, and the AmazonSupply logo trademarks... Will have, we’ll detail the entire process step-by-step for you to take off 4 nuts in your home also! Average of 15 amps to operate the current draw and insert it into the.! Is typically mounted on the core as possible we have just described is one of the terminal down... For power with the key on and off threaded all the time, with! When installing electric cooling fans do not actually work Required to Control the electric fan s... Times, people tend to connect their cooling fans to the fan motor 's supply. Larger room requires either a higher capacity radiator or more units to be one terminal that has power with ignition... Will need to Know aren ’ t threaded all the time, even with key!

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