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Join Date: Oct 2006
Location: New York
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Just let you know that I unplugged the one on the radiator today, it actuated
the fan immediately.
So, I think this is the second fan switch. The reason it has two wires instead of
one wire is because the two are cascaded together, the one on the themostat
housing then connects to ground. As long as one of the switches is open,
the fan should be turned on.
This is not documented on the electrical diagram of Chilton manual, so I
suspect it is optional, shorting the switch (in case your radiator doesn't have
a place to put in the fan switch, possible?) will leave only one switch functional.
Last edited by xzhuang; 12-28-2006 at 10:26 AM.