Jeep Wrangler Windshield Wiper Motor

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Inside on the big gear are two copper contact rings. Note the two pits on the outer ring about 8 o'clock. Gradually the copper was burned away by the motor switching on and off. Now there is no contact and so the wiper switch is unable to detect when the motor is in the parking position. This causes the wiper blades not to park, and the intermittent wipe doesn't work either.

pits in the wiper gear contact

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