I just checked the 3 wire plug behind the brake booster. I have 12+ volts on the red wire, 8 volts on the yellow and a good ground on the black wire. These go to the blower regulator. My research says that with these readings the climate control is OK. Next I ground the blue terminal on the blower and the motor runs at high speed. Blower motor OK. I am down to the regulator or the aux coolant pump. The pump was pulling over .8amp and then I lubed it with WD40 and it draws .5 amp. My book says it must be the regulator. They don't give these away so I am looking for a procedure to confirm the regulator is bad. Any ideas?

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Handyjay