This will be the wire that connects your switch to your fan power wire. Won't respond quite as quickly as a switch thats directly in contact with the water flow, but it functions just fine Get the 10 gauge wire and place it through the hole in your fire wall. The fan shroud is very important. 5. Connect the âBâ terminal on the control to the 12 volt positive (+) battery terminal using the thick red wire and fuse holder provided in the kit. I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. 12v switched wire to green wire at a/c clutch. Now look in the cable there should be a ground and a positive wire. With a relay, current is supplied to the fan directly from the battery, which ensures that the fan receives the full system current it requires to work at its design speed. Hi guys, i need your help! the other i cut off as i had radiator probs. Use a blade terminal for the relay and a barrel connector for the fan. The green wire is designed to work in two different configurations. Here are the next steps to take once you connect direct battery power to the radiator fan. note: or in an â84 to â89 240 you may use the a/c power âonâ wire: red/white wire at ac switch microswitch in dash. Ie, can I simply wire the two hot wires directly to the battery, through the thermo switch and to the fan? Should the radiator fan come on when the car starts? 2. The green wire is designed to work in two different configurations. A fan having 12vdc and 25 watt need a panel of 12vdc and 30watt. b4 wiring to fuse box or ignition i tested and today it melted positive side of switch, like the other fan did.. som are my fans on way out or should i put a resistor in Run 1 wire direct from battery (or keyed ignition power) into 1 side of the bi-metal switch, other wire direct to the fan. In order to run a solar fan directly from solar panel without battery you need to select whole system carefully. The red wire from our relay connects directly to the cooling fan, and the black wire from the cooling fan connects to ground, both wires will utilize our supplied fan harness. So, I have the POS Black Magic fan. Add a new red 12AWG wire from positive battery ⦠So now we have a wire that goes through the engine bay to the cabin of your car! There are only 5 good charging hours in a day, and the other 19 hours the fan will drain the battery. Simply wedge the switch in the radiator fins. 6. How can i wire a cooling fan directly to a switch on my car? Warning: installation of accessories should only be undertaken by the electric fan should start immediately. Attach the wire to the relay terminal opposite the battery terminal. I wired my radiator fan directly to my battery on a suggestion from a reputable VW aircooled and diesel mechanic my dad takes his cars to. : at 6 oâclock), to I just want a cablre from battery to the fan connect the copper temp sensor so its doing the job as it should. 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. Below 200 degrees, the fan turns off, above it, the fan turns on. My brother in law's 1984 corvette has the hot wire to the radiator fan connected directly to the battery with an - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. Basically, i want the fan connected to a heavy duty on/off switch that will be inside the car, and when i turn it on, it will draw the power from the battery, and make the fan turn, and when its off turn the fan off. First, you need to unplug the wiring connector. Now find the red wire that is connected to the motor of the electric fan. With the help of a wire cutter, cut the wire at a distance of twelve inches from the start point. Wiring the Fan: Radiator and Fan Combo #51168 & #51169 only Rev. Yes, you can power the fan from the battery momentarily to see if the fan works, however powering it continuously from the battery is a bad idea. likes to use two relays to power up one large electric cooling fan. It would be good to put a dc controller in between panel and dc fan. 86 (gray/white wire) goes to the ignition switch. Now take the power wire from your fan and connect it to the wire ⦠wire and run a jumper wire directly to the positive (+) terminal on the battery. While most manufacturers mount the cooling fan resistor directly to the cooling fan assembly, not all do. Cooling Fan M.A.D. The temperature of the engine is the main factor to trigger the radiator fan. 01-13-12 54988 Page 3 of 4 1. With the stock motor, it cooled fine. 3. Attach an electrical connector at both ends of the wire and put a heat shrink over them. Cut another piece of the 10-gauge wire long enough to go to the fan. Route the 16-guage wire up the fenderwell and through the firewall to just below the dash. Take care that the fan and shroud does not foul any struts, engine pulleys, bonnet latches etc., including when the bonnet is closed. simply buy a on off switch 30 amp or better automotive run this switch directly from the battery directly to the hot wire on the fan motor, FYI In some instances this will cause over run or Idling on after the ignition switch is turned off the fans produce enough back power to barely keep the engine running if this happens just take it alll ! If, temporarily, you don't refit the grommet where the wire comes through you will be able to see the wire and hole directly behind the instrument pod. It can also be mounted to the front side of the radiator assembly, the radiator core support, a bracket on the inner fender, or any other place that will get a lot of air flow. Position the fan(s) directly on the surface of the radiator/condenser. You can connect the negative to a handy GND post on the rear of the pod. BAD IDEA This will work for about 2 days, then the battery will be so low, the fan won't run, and your small panel won't be able to charge it up to 12V. How can i wire a cooling fan directly to a switch on my car? I have an Enermax 12cm fan (EB122512H), i need to plug it to a 12v DC power supply but i don't know how to wire it; The fan has 4 wires (yellow, black, white, red) but the power supply has just two wires. There are many elements that could trigger the fan: Coolant temperature sensor, temperature switch,⦠4. A deeply drained battery will soon sulphate and die too. Test The Radiator Fan Motor . I know it runs about the same amount of time before shutting off as the stock KTM Hardparts fan was running, and it does it with only an 8w draw which is less than 1/4 of what the KTM fan draws. i hooked it up to a switch to battery.. the terminals get hot, and did spark when joined. How can i wire a cooling fan directly to a switch on my car? A 16-inch round fan covers only 201 square inches, which is only half of the total surface face of the radiator. I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. All this does is churn hot engine bay air. Attaching this wire directly to a 12V non-switched source will allow the fan to run after the vehicle has been turned off which could effect the vehicles battery performance. While most manufacturers mount the cooling fan resistor directly to the cooling fan assembly, not all do. Also have the FFRP Cobra aluminum radiator. For 8â, 9â, 10â and 12â fans, check that the wires exit the motor downwards (i.e. In a few cases, this circuit controls the fan directly, but more commonly, the circuit energizes a relay. Hi I need help how to wire this fan to the battery directly. It's job is to force the fan to pull air through the entire radiator. optional 2nd relay overrides temp switch and turns on fan when a/c is turned on fan adjustable fan switch/thermostat with radiator probe (12v switching, non-variable speed If your fan has still failed to turn on when the car starts, you can check the fan by connecting a power source to it. Without it, the fan will only pull air through the area directly in front of it's blades, as well as the side between the blades of the fan and the radiator. Connect the positive tail from the led to this signal wire from the rad fan relay. if the fan started reattach the green wire to the proper (+) wire on the a/C clutch or manual switch. What causes the radiator fan to come on? (Do not install fuse at this time) 2. Attaching this wire directly to a 12V non-switched source will allow the fan to run after the vehicle has been turned off which could effect the vehicles battery performance. For a remote battery, it can be connected to a power port in the engine compartment, but it should be fused. I guess the idea is that a blown fuse or faulty wiring would never lead to the fan not working and thus the car overheating. Or will this break something? 30 (other red wire) needs constant 12-volt power from the battery. 87 (red wire) connects to the positive wire on the electric fan. I see that this Vanagon's low speed fan appears to run directly through the fuse box to the fan (but it doesn't work) and the high speed fan appears to use a relay. Unhook those cables. The first 50cfm cpu fan I tried ran quite a bit more than the KTM fan. Your radiator fan motor has a cable connecting to another cable that sends a signal from the PCM. It flows 90 cfm which cannot be too far off of what the stock fan flows. Visually inspect the area on and around the radiator cooling fan assembly. could you help me? 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