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Old 04-14-2007, 01:19 PM   #20
3150Mach1
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Join Date: Apr 2005
Location: Charlottesville, VA
Posts: 13,678
Re: Installing Manual Fan Override Switch

OK. Got it done. It was pretty easy. Hawk verified that the instructions was talking about the correct wire. His notes below:

"OK, I checked out the schematic for ours, and yes, the wire you want is the Light green with violet stripe, coming off pin 46 of the main PCM connector (C175).

Grounding that wire will engage the high speed fan relay regardless of the PCM signal. So wire a switch from that lead to ground.

You can turn the switch "on" and the fan will run at high speed as long as the ignition is turned to "run". If the switch is "off", the PCM again controls the fan."


It runs just like he says.
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