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Remove the windshield wiper arm from the windshield wiper motor. Remove the wiring harness. Remove the retaining nut. Reverse the process to install the new windshield wiper motor.
The windshield wiper motor is located just below the windshield wiper blades and is covered by a black panel.
Make sure that the nuts holding the wiper arms are sufficiently tight to ensure that they move when the shaft turns thus moving the wiper arm.
right under the cover that the wiper blades mount to
Under the vin plate. fold the windshield forward.
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Weak battery or alternator output.
The 1994 Jeep Grand Cherokee takes 20" replacement windshield wiper blades on both sides front and a 10" or 11" wiper on the rear.
You need to remove the wiper motor and linkage assembly. Then disconnect the motor from the linkage, and turn on the wipers, to see if the motor is running or not. Then when you have the linkage out, manaully move back and forth to see if its binding or not. Usually a bad motor. Unfortunately, MB seems to have many problems with the wiper blade motors.
no
Either the park switch (usually within the windshield wiper motor) is bad, not letting the wiper park, or the intermittent wiper control is bad, not letting it shut off. Another possibility is a bad ground.
On the drivers side, right in front of the windshield. Lift the hood and look under the plastic grill. You will see it there. Lift the grill, it snaps in and out, and you can get to it.