2. First, you need to unplug the wiring connector. Add a new red 12AWG wire from positive battery … It flows 90 cfm which cannot be too far off of what the stock fan flows. Or will this break something? With the stock motor, it cooled fine. Here are the next steps to take once you connect direct battery power to the radiator fan. The green wire is designed to work in two different configurations. 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. While most manufacturers mount the cooling fan resistor directly to the cooling fan assembly, not all do. I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. 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. likes to use two relays to power up one large electric cooling fan. If the fan is affixed directly to the core’s face, this will only pull air across half of the radiator in low-speed driving when you need maximum cooling. With the help of a wire cutter, cut the wire at a distance of twelve inches from the start point. 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. Also have the FFRP Cobra aluminum radiator. Now find the red wire that is connected to the motor of the electric fan. 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. There are only 5 good charging hours in a day, and the other 19 hours the fan will drain the battery. 01-13-12 54988 Page 3 of 4 1. Route the 16-guage wire up the fenderwell and through the firewall to just below the dash. 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 The temperature of the engine is the main factor to trigger the radiator fan. Won't respond quite as quickly as a switch thats directly in contact with the water flow, but it functions just fine Your radiator fan motor has a cable connecting to another cable that sends a signal from the PCM. While most manufacturers mount the cooling fan resistor directly to the cooling fan assembly, not all do. Run 1 wire direct from battery (or keyed ignition power) into 1 side of the bi-metal switch, other wire direct to the fan. What causes the radiator fan to come on? So, I have the POS Black Magic fan. Take care that the fan and shroud does not foul any struts, engine pulleys, bonnet latches etc., including when the bonnet is closed. For a remote battery, it can be connected to a power port in the engine compartment, but it should be fused. Now take the power wire from your fan and connect it to the wire … A fan having 12vdc and 25 watt need a panel of 12vdc and 30watt. 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. Simply wedge the switch in the radiator fins. 87 (red wire) connects to the positive wire on the electric fan. How can i wire a cooling fan directly to a switch on my car? 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. 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. 5. The green wire is designed to work in two different configurations. Wiring the Fan: Radiator and Fan Combo #51168 & #51169 only Rev. Cut another piece of the 10-gauge wire long enough to go to the fan. So now we have a wire that goes through the engine bay to the cabin of your car! Attach the wire to the relay terminal opposite the battery terminal. wire and run a jumper wire directly to the positive (+) terminal on the battery. Warning: installation of accessories should only be undertaken by It would be good to put a dc controller in between panel and dc fan. 30 (other red wire) needs constant 12-volt power from the battery. 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. Connect the “B” terminal on the control to the 12 volt positive (+) battery terminal using the thick red wire and fuse holder provided in the kit. There are many elements that could trigger the fan: Coolant temperature sensor, temperature switch,… 4. Now that I have my AFR headed 331, it overheats in traffic. 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. the other i cut off as i had radiator probs. 3. 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. Hi I need help how to wire this fan to the battery directly. Get the 10 gauge wire and place it through the hole in your fire wall. Visually inspect the area on and around the radiator cooling fan assembly. Hi guys, i need your help! Use a blade terminal for the relay and a barrel connector for the fan. 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. 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. 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 ! could you help me? 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. Test The Radiator Fan Motor . 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. Connect the positive tail from the led to this signal wire from the rad fan relay. 6. the electric fan should start immediately. Ie, can I simply wire the two hot wires directly to the battery, through the thermo switch and to the fan? (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. : at 6 o’clock), to if the fan started reattach the green wire to the proper (+) wire on the a/C clutch or manual switch. Now look in the cable there should be a ground and a positive wire. 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. Should the radiator fan come on when the car starts? How can i wire a cooling fan directly to a switch on my car? I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. This will be the wire that connects your switch to your fan power wire. i hooked it up to a switch to battery.. the terminals get hot, and did spark when joined. note: or in an ’84 to ‘89 240 you may use the a/c power ‘on’ wire: red/white wire at ac switch microswitch in dash. You can connect the negative to a handy GND post on the rear of the pod. How can i wire a cooling fan directly to a switch on my car? It's job is to force the fan to pull air through the entire radiator. 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. The fan shroud is very important. Cooling Fan M.A.D. 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. All this does is churn hot engine bay air. 12v switched wire to green wire at a/c clutch. Position the fan(s) directly on the surface of the radiator/condenser. Attach an electrical connector at both ends of the wire and put a heat shrink over them. 86 (gray/white wire) goes to the ignition switch. I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. A deeply drained battery will soon sulphate and die too. For 8”, 9”, 10” and 12” fans, check that the wires exit the motor downwards (i.e. The first 50cfm cpu fan I tried ran quite a bit more than the KTM fan. Below 200 degrees, the fan turns off, above it, the fan turns on. In a few cases, this circuit controls the fan directly, but more commonly, the circuit energizes a relay. 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 I just want a cablre from battery to the fan connect the copper temp sensor so its doing the job as it should. Unhook those cables. A 16-inch round fan covers only 201 square inches, which is only half of the total surface face of the radiator. Goes through the engine is the main factor to trigger the radiator cooling fan assembly, not do. Two relays to power up one large electric cooling fan directly to cabin. Negative to a switch on my car first 50cfm cpu fan i tried ran quite a bit than... 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