Get the 10 gauge wire and place it through the hole in your fire wall. See Contact Test in Step 1. Hi, I have a 95 Pontiac Grand Prix with a 3100 V6. The armature pivots on one wire terminal, and the other wire terminal connects to the contact. I would not bypass the temp. If so, a replacement fan costs upwards of $45. 2) Those fans do look really cheesy. This means that the fans operate on a thermostatic control we earlier placed in the radiator. It has an adjustable controller, relay, inline fuse, and thermoswitch that screws into the radiator. Electric radiator-fan motors are switched on either by the ignition switch - and run while the engine is working - or by a thermostatic switch. Quickest test would be to unplug the radiator fan, run 1 wire each from the pos. So when the turbo timer shuts the car off the fan turns off also, or I can just turn the key to ign. W220 Cooling Fan Controller is Hard Wired to Permanent + and - It receives a PWM Signal from ME ECU and as the Pulse Width varies based upon Engine Temp Data so the Fan Speed varies. I should have tested the fans themselves, replaced them if they didnt power on, then replaced the FCM if need be. Withdraw the fan harness through the mounting panel grommet. It shouldn't be too hard to determine where to connect the trinary wire. sensor. When the toggle switch flips on, the armature closes against the contact, which completes the electric circuit and turns on the fan. At this time you may want to get an idea of where you will be placing the Denso module. curious how hard it is to remove the fans themselves, if i have to remove the bumper and all that jazz. The radiator is removed with the fans still attached. Cut a wire, strip the insulation from both the ends and attach to the fan controller. I want to bypass the relay and the temperature sensor completley as currently the fan doesnt work at all. I'm after the wire or a "how to" wire up the thermo fans to the ECU of the EJ engine. Wire the two wires from the harness side, BLUE W/ YELLOW Stripe & BLACK wires together. A very likely reason is that the aux. Jun 3, 2006 #1. I believe the brand is Imperial. OH WELL, I have a new one. So I figured if I wire two 120mm fans in parallel but the problem is that the solar panel doesn't even spin the fans. 9. I would like to use the factory harnesses I snipped off my stock fans to hard wire to the Mishimoto fans so they are plug & play with the factory wiring. The fans will come on when the factory ECU tells it to in this config. Run jumper wires between the connector's two electrical terminals. What this does is bypasses the resistor that was there on the large fan (this is step 3). battery terminal, and touch one to each terminal on the fan plug (DO NOT touch them together). To replace the module, I don't think it comes on now because the car seems to get pretty high on the temp gauge, but it doesn't over heat (in traffic temp is about 235-240 or so). New fans, new J293 fan control module. Prior to buying a custom wire harness or doing PCM calibration work, determine if the vehicle will have air conditioning, if electric fan(s) are required when the A/C compressor is on, and if the PCM will be used to control the electric fan(s). The radiator for our LS conversion is of the cross-flow variety, with water flowing from the driver’s side tank to the passenger’s side. As is, that's overdesigning. Need to find a DIY written somewhere. & neg. Engine coolant temperature sensor is located on or near the thermostat housing and contains a Black/Light Blue wire and a Tan/Black wire in the connector. Certain aftermarket fans (eg Davies Craig) are specifically designed to be attached as close to possible to the radiator face and work most efficiently in that position. fan is NG. Fortunately this is a lot easier than it might seem and can be accomplished very inexpensively and doesn’t require running wiring to the engine compartment or connecting new circuits to the battery. I've got an '88 L series with an EJ22 installed. This is part 3 (of 3) of my video series on installing a Griffin Radiator and Spal Electric Fans. The wire you will need to cut will be in this wiring harness and in most autos will be red in color and a heavy gauge. So now we have a wire that goes through the engine bay to the cabin of your car! TEST 2: Bypassing The Radiator Fan Motor Switch. 26 – sensor harness = 0. Bypassing the radiator fan switch. Cross flow radiators are the more efficient of the two, but there are still die-hard fans of the down flow radiator. At half an amp per fan, you could hook up 24 fans in parallel! The radiator fan itself may be faulty. This will be the wire that connects your switch to your fan power wire. If only one is running with AC on, you DO have a problem and a reason to start diagnosing. Therefore we wanted the fans to stop when the engine is cranking. Now connect the wire coming in from the engine bay to the + connection on your switch and connect the wire with the resistor on it to the - and load connections on the switch. We upgrade the cooling system in our big-block–powered 1967 Camaro using a Frostbite aluminum radiator, dual SPAL electric fans, and a Weiand water pump. In 99% of all cases, these parts are all in the water cooling system. Fantastic. Honestly, if there's a power supply in your computer giving 12V, just wire it up to that. Radiator; Fans; There are passive systems that don’t have fans, but they are pretty uncommon. Radiator Fan hard wire Posted by Pitman99505, Jun 3, 2006. Thermostatically controlled motors do not work the fan until the engine coolant rises above normal operating temperature, and then switch off when it has cooled down again. The fans actually have a shroud already, which is designed to complement the compact style fan. Otherwise, the black/yellow wire near the leading ignition coil is another good choice. If in TEST 1 the radiator fan motor does activate (when applying power and Ground directly to it), then we'll test the radiator fan switch by using a jumper wire (on its connector) and bypassing it. 43 – sensor harness = 0. Step 2: Wiring. AC on + coolant temp 221*F or less = both fans should run on LOW. In this 2 nd of 3 video series on installing an all-aluminum 2 core radiator with electrical fans, I cover all the required electrical hook ups. You may notice that you can’t actually see a reservoir or pump in your AIO cooler. Pick a power supply that can source an amp or two, and that'd be more than enough. Follow the wire from the aux. ... or turn off the fan's circuit breaker if the fan motor hard … Step 1 - Wiring The first step in adding a switch to a radiator fan is to disconnect the battery's negative terminal. This How-To will cover Option A.-Test fit the radiator again with the fans attached. Wire both BLACK wires FROM the fan to the single BLUE W/ Green Stripe wire on the harness side. Relay controls operation of radiator cooling fans. Its meant to be a compact design. If you do wire them to a toggle switch, please use an inline fuse and some decent gauge wire! 55 5. If the resistance is greater than 1 ohm, repair the wire harness as necessary. This will eliminate the risk of the fan unexpectantly starting when working on the car. Access to AC wire is easy with wheel and wheel well off. Relay for wiring electric fans to radiator. 3) It's very possible that you have a clog in the radiator or block, or a failing water pump, or loose belt. Step 3: Terminals I checked the J293 connector outputs. Go back under the hood and reconnect the red 12V cable to the battery. both fans have their wires cut and ready to be pulled. I have yellow, green, blue & grey. I don't have the schematic for the SPAL controller, but it may have been posted here previously. Relay is a solid state relay. Option B; Wire fans directly to the battery for constant power. Now take the power wire from your fan and connect it to the wire … ... (located in front of the engine radiator) as high-pressure gas. These are integrated into the CPU block and sit together with the water block itself. Radiator Fan Control Relay Radiator fan control relay may be referred to as radiator fan control module. Here the fan tray can be seen attached to the underside of the radiator. 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. This whole process is not hard, but I will say, it requires patience. Attach that wire to the grounding point you found in step 27. Release the fan motor from the radiator by removing the four nuts securing the fan shroud to the mounting brackets riveted to the radiator frame. This can easily be achieved by running a wire from the “start” terminal of the ignition to a normally open relay. Flat blades that handle air poorly. Pitman99505 likes … If your car is a 1st gen RX-7 you will find that the black/white wire around the ignition area to be a good source of a switched 12V signal. I'll bet the bearings and motors are cheap, too. Power for high current devices like fans should be taken directly from the battery. It's okay to buy a power supply that can source up to 12 amps at 12VDC. fan to a plug connector, disconnect it, and connect it directly to 12 volt supply (use wire leads directly to battery) to see if the fan runs....if the fan doesnt run, its NG. I would first find out why the aux fan did not come on. My factory fan pulls 4.5A steady-state, 13A spike at turn-on, and almost certainly flows better than that. Just after the car is turned off, the acc is at +12 and the signal wire is 5Hz with duty cycle of 11%. Here is how to test if the fan is functioning properly: Unplug the radiator fan connector. At this point, the radiator is in the car, and the required electronics are hooked up. Want I need to know is how can I tap the fan relays so the fan comes on when I start the car, I'm in Texas so the fan running all the time the car is will not be a bad thing. Placement should be a maximum of 10 inches from the radiator. How can i wire a cooling fan directly to a switch on my car? We also wanted the fans to not run when the key is in the “off” position. Any help? I completely ditched the OEM fan electrical system and wired an adjustable fan controller from Adv auto. Maybe somebody could post it or a link. Many people like to be able to run their radiator fans all the time while at the track or drag strip. I've got the thermo fans running from the stock EA radiator … and leave the fans on. What about a stock 4 wire set up? The other end of the wire that was fitted to the in-line fuse needs to be fitted with a female spade terminal. The problem is, 15 minutes after the car is shut off, the fans come on full blast and drain the battery. I do not want my fans on all the time per the diagram you posted. Step 3 – Test the radiator fan. Pitman99505 Proven Member. Connect in-line fuse to the positive battery terminal. All you need to do is wire the trinary switch output to the fan relay(s) for full speed. Option C; Wire the fans to a switch to manually control them. 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