QUOTE=coondawg6]the wiring still goes thru resistor assembly --all power to the blower motor goes thru the resistor assembly--it travels thru a shunt so there is no resistance on the hi speed setting[/quote]
Since he wrote that the blower didn't work in any speed and that I wrote enough to put him to sleep, I didn't feel it necessary to explain the high speed path.
I said to use a Mitchell manual to get the actual wiring diagram for his car since I don't know what changed between 89 to 97. For 97 the high speed circuit doesn't go through the resistor assembly but goes directly from the blower switch to ground, according to the Ford electrical manual.
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Originally Posted by thunderbird muscle
Test to see if you are getting power to the resistor, after the resitor, and to the motor. This might help you narrow your problem.
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If you are showing a voltage after the resistor then you have a bad connection to ground. The "low" side of the resistor should be connected to ground.