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Old 11-24-2012, 04:31 PM
Wilkyinnh Wilkyinnh is offline
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Join Date: Jan 2012
Posts: 17
Default Whats it do?

Hello gang and Happy Holidays. I'm finishing up the wiring in my 66 no A/C car and noticed a 3 prong type thingy coming out of the heater box inside the car. I'm not sure of the function of this but when i went to connect it, it basicly fell apart and into the heater box. I've ordered a new one via OPGI but not sure what it's function is, anyone?
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Old 11-24-2012, 07:01 PM
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Hank70SS Hank70SS is offline
Join Date: Dec 2009
Location: Brighton, MI
Posts: 4,505

Not sure but it sounds like a resistor block. It lowers the voltage going to the fan motor for low or medium speed. Full 12v is used for fan high speed.

70 Chevelle SS396(454), M20, 3.73
My Chevelle
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