Try this:
With the key OFF, unplug the right side window switch, and with a DMM set to Ohms, check the harness for continuity between the red/yellow and ground, the yellow/red and ground, and then the red/yellow and the yellow/red. Make sure you are checking the harness going to the car, not the wires going to the motor.
Then turn the key on, and set the DMM to 20 volts dc, and check for voltage at the pink wire.
Post the results
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