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    1. #2
      Join Date
      Jul 2005
      Location
      Marshall , MO
      Posts
      699
      Something is very wrong.
      The relay should have the contact pin 87 wired to either the fan or the battery and the common pole pin 30 to which ever the the other isn't connected to. The trigger and ground wires for the relay pins 85 and 86 wiring depend on how you want the fan to operate. If you want it to only work when the ignition switch is on ground pin 85 or 86 and run the other to the switch and your switched 12v to the other side of the switch. Now it will only come on using the switch when the ignition switch is on.
      If you want to be able to control the fan with out the ignition switch being on. Wire pin 85 or 86 to the same pin the battery is connected to run the other of the two to you switch in the dash and ground the other side of the switch. Now you can switch the fan on any time, By using a ground to trigger the relay there isn't any risk in the wire getting chaffed and shorting out.
      Make sure either way you wire it you use a fuse between the relay and the battery. There are other ways to wire it but these two are the simplest.

      Brad Shepard
      69 Malibu
      Marshall, MO





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