Re: wiper motor problem 1967
Ensure resistance is read, for motor windings, between yellow terminal and individually to the dark blue & light blue wire terminals, with harness unplugged.
A voltage check at wiper plug, plugged onto wiper, there should be battery voltage on all terminals mentioned.
The wiper switch provides the ground connection for speed selected through the switch body to dash, and switch may need removal and dash wire brushed where the switch rests against completing the circuit.
See AIM page UPC 12-D1 & D2 (for switch)
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