how to wire radiator fan directly to battery

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. For a remote battery, it can be connected to a power port in the engine compartment, but it should be fused. While most manufacturers mount the cooling fan resistor directly to the cooling fan assembly, not all do. The green wire is designed to work in two different configurations. So now we have a wire that goes through the engine bay to the cabin of your car! 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. 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. Now look in the cable there should be a ground and a positive wire. While most manufacturers mount the cooling fan resistor directly to the cooling fan assembly, not all do. 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. 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. How can i wire a cooling fan directly to a switch on my car? Hi I need help how to wire this fan to the battery directly. Test The Radiator Fan Motor . Warning: installation of accessories should only be undertaken by Use a blade terminal for the relay and a barrel connector for the fan. Should the radiator fan come on when the car starts? I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. There are many elements that could trigger the fan: Coolant temperature sensor, temperature switch,… 4. Wiring the Fan: Radiator and Fan Combo #51168 & #51169 only Rev. Run 1 wire direct from battery (or keyed ignition power) into 1 side of the bi-metal switch, other wire direct to the fan. 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 temperature of the engine is the main factor to trigger the radiator fan. Simply wedge the switch in the radiator fins. Add a new red 12AWG wire from positive battery … 5. 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. Attach the wire to the relay terminal opposite the battery terminal. Or will this break something? 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. Below 200 degrees, the fan turns off, above it, the fan turns on. Position the fan(s) directly on the surface of the radiator/condenser. 12v switched wire to green wire at a/c clutch. I just want a cablre from battery to the fan connect the copper temp sensor so its doing the job as it should. The first 50cfm cpu fan I tried ran quite a bit more than the KTM fan. 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 electric fan should start immediately. A 16-inch round fan covers only 201 square inches, which is only half of the total surface face of the radiator. 87 (red wire) connects to the positive wire on the electric fan. What causes the radiator fan to come on? Now take the power wire from your fan and connect it to the wire … Won't respond quite as quickly as a switch thats directly in contact with the water flow, but it functions just fine It would be good to put a dc controller in between panel and dc fan. if the fan started reattach the green wire to the proper (+) wire on the a/C clutch or manual switch. Take care that the fan and shroud does not foul any struts, engine pulleys, bonnet latches etc., including when the bonnet is closed. Also have the FFRP Cobra aluminum radiator. How can i wire a cooling fan directly to a switch on my car? 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. The fan shroud is very important. i hooked it up to a switch to battery.. the terminals get hot, and did spark when joined. Your radiator fan motor has a cable connecting to another cable that sends a signal from the PCM. 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. 6. In order to run a solar fan directly from solar panel without battery you need to select whole system carefully. 01-13-12 54988 Page 3 of 4 1. 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. 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? Here are the next steps to take once you connect direct battery power to the radiator fan. With the stock motor, it cooled fine. A fan having 12vdc and 25 watt need a panel of 12vdc and 30watt. How can i wire a cooling fan directly to a switch on my car? In a few cases, this circuit controls the fan directly, but more commonly, the circuit energizes a relay. A deeply drained battery will soon sulphate and die too. Now find the red wire that is connected to the motor of the electric fan. It's job is to force the fan to pull air through the entire radiator. So, I have the POS Black Magic fan. 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. (Do not install fuse at this time) 2. Now that I have my AFR headed 331, it overheats in traffic. : at 6 o’clock), to 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. I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. 3. 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. All this does is churn hot engine bay air. Cut another piece of the 10-gauge wire long enough to go to the fan. Visually inspect the area on and around the radiator cooling fan assembly. Attach an electrical connector at both ends of the wire and put a heat shrink over them. Route the 16-guage wire up the fenderwell and through the firewall to just below the dash. There are only 5 good charging hours in a day, and the other 19 hours the fan will drain the battery. I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. Connect the positive tail from the led to this signal wire from the rad fan relay. 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. wire and run a jumper wire directly to the positive (+) terminal on the battery. First, you need to unplug the wiring connector. Cooling Fan M.A.D. 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. Unhook those cables. Get the 10 gauge wire and place it through the hole in your fire wall. 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. It flows 90 cfm which cannot be too far off of what the stock fan flows. 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 The green wire is designed to work in two different configurations. 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. You can connect the negative to a handy GND post on the rear of the pod. 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. Ie, can I simply wire the two hot wires directly to the battery, through the thermo switch and to the fan? the other i cut off as i had radiator probs. For 8”, 9”, 10” and 12” fans, check that the wires exit the motor downwards (i.e. 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. 86 (gray/white wire) goes to the ignition switch. 30 (other red wire) needs constant 12-volt power from the battery. likes to use two relays to power up one large electric cooling fan. Hi guys, i need your help! 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. 2. This will be the wire that connects your switch to your fan power wire. 16-Guage wire up the fenderwell and through the entire radiator time ) 2 a shrink. Square inches, which is only half of the electric fan battery directly at both ends of the.! Hole in your fire wall doing the job as it should cut the wire a... 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