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Originally Posted by tsiero
The wires that feed my blower motor regulator are fried at the connector on the firewall. The car is a W124. I pulled the blower motor and it works but there is no power to the regulator on any wire. I tested the blower motor out of the car with a battery charger. Itraced back to the connector on the firewall and that connection if fried. Also I don't have cruise control. In all fairness I just purchased this car and the cruise never worked or the blower motor. Any suggestions?
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Fried wires mean heat. Current through resistance is heat. So, there is probably too high resistance (bad connection) in some pin(s) of the connector. Identify the pin(s) and clean or better replace.
Heat in a bad connection causes oxydation, which causes worse connection, leading to more oxydation, etc... a vicious circle.
Once started, difficult to stop. So replace if possible.