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GM fan switches


Guest Perry

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Guest Perry

Hi all,

I wired my taurus fan by using an adjustable fan switch with a temp bulb to switch the fan from low to high and a GM fan switch in the water neck of the 350 chevy to switch it all on. The GM switch is a one wire switch that I thought would go to ground when temp was reached, but instead it appears to close on a diode which will only allow current to flow FROM ground. in other words, it doesn't work. I'm sure the switch I got was not a thermistor, and am considering blowing the diode out with too much voltage across it to see if I get lucky and it fails closed.

Has anyone out there got an application that I can use to get the right switch? I want it to go to ground when the fan should come on, maybe around 190 or 200 degrees.

I did try a search to no avail.

thanks,

Perry

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