how do I do this ? my brain has gone blank ! I'm blaming it on old age lol
Because the door contains a gear driven mechanism and razor sharp moving parts, DO NOT PLACE YOUR HANDS OR FINGERS INSIDE THE DOOR WHEN ENERGIZING A WINDOW MOTOR!!! SERIOUS INJURY COULD RESULT!!Remove the inner trim panel from the door. Unplug the factory harness from the door switches. Notice that
two wires run between the window switch connector and the window motor. Those two wires are the
only electrical connection to the motor. That is, neither motor grounds through its attachment to the door.
The motor rolls the glass up and down via the regulator mechanism as the switch reverses polarity on the two wires. In other words, when the window switch is flipped upward, one of the two wires connected to the motor is B+ and the other wire is ground. When the window switch is flipped downward, polarity on the two wires reverse, so that the wire that was previously B+ becomes ground and the wire that was previously ground becomes B+.
For the purpose of testing each motor - to bypass the door switch and much of the factory wiring, temporarily connect two test leads, one to battery power through a 20-amp circuit breaker and the other to ground. Jump the ground test lead to one of the wires running to the motor.
Being very careful not to let the B+ test lead touch bare metal or the ground test lead, touch the B+ test lead to the remaining wire running to the motor. Assuming the glass is mid-travel, the motor should roll the glass up or down. Now, reverse the test lead connections. The motor should roll the glass in the opposite direction.
You've just tested the window motor and the regulator mechanism.
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