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07-22-2006, 12:20 AM | #1 | |
AF Enthusiast
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HOW TO: Control Your Cooling Fan With A Switch
Courtesy of Bradiscool.com
Cooling Fan Override Modification: (design by Mike Holmes) Items & Tools Needed: (1) 30A Automotive Bosch-type relay (1) SPST Switch 18 Ga. wire Female spade connectors (for relay & switch) Butt Connectors or 3M Splice connectors (or solder and heat-shrink if you prefer) Screwdriver (regular) 10mm wrench or socket Wire strippers / Crimping tool First open the hood and locate the fuse panel beside the battery. There is a single retaining clip that holds it in place that can be removed using a regular screwdriver to pry the center pin of the clip up and out. Next you will need to remove the single large gauge wire that enters the panel from the battery using a 10mm wrench or socket. This wire IS live so be careful not to let it touch any metal! Flip the panel upside down and removed the bottom cover with the screwdriver.......it just snaps off. Using the cover to the fuse panel as a reference, locate the cooling fan relay. There will be (4) wires going to the relay.......(2) Red, (1) Blue, and (1) Green. Splice into the Blue wire using the 18ga wire with either a butt connector or 3M splice connector. Connect the other end of this wire to the #87 pole of the relay. Using the same connection method connect a wire from the #30 pole to the Red wire. You can also connect a wire from the #86 pole to this same Red wire or use a jumper wire on the relay to do it. Next attach a wire to the #85 pole of the relay and route it to the inside of the car.....this will be connected to the switch. Mount the switch where you'd prefer and connect the wire to one of the poles. Next connect a wire to the other pole of the switch and the other end to ground somewhere inside the car. Re-assemble the use panel under the hood and be sure to re-connect the large gauge red wire that goes to the battery with the 10mm. Oh yeah, and if you have an alarm be ready with the remote to turn it off because usually when you reconnect that wire the siren goes off! The next step is .....that's it, you're done! Flip the switch whenever you want and you're cooling it! Wiring Diagram In this Diagram there is a lead shown for a led indicator. Just wire like shown. Information from Vincent
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1999 Chevrolet Monte Carlo LS [semi-daily driver until LIM repair or trade-in for '13 Fusion, 110k miles] Gone but not forgotten: 1995 Pontiac Grand Prix GTP[sold, 128k miles] 1996 Oldsmobile Cutlass Supreme SL Coupe [a minivan tore my door off, totaled, 84k miles] 1998 BMW M3 Hardtop Convertible [a pathfinder armada stopped in front of me, totaled, 70k miles] 1989 Chevrolet Cavalier Coupe [died, 160k miles, engine problems] 1990 Hyundai Excel GL [died, 220k miles, died] |
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07-22-2006, 07:00 PM | #2 | |
AF Enthusiast
Join Date: Dec 2004
Location: whitby
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Re: HOW TO: Control Your Cooling Fan With A Switch
you realy don't need all of that. You can just run a wire form the left rear post on the fan relay to a switch and ground the other end but if you're gonna use it while the motor is running you'll need a diode
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Red Z24 = Dead, 03 2 door = 15.5 with no traction. low 15's here i come 'Never forget Grasshopper, Not speed, smile!' |
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