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the wipers and turn signals are probably a faulty switch (a common problem 0 I have a 1994 c180 and have had 2 switches on they vary from the flashers not working or wipers coming on by them selves or not working at all indicators not working can but from ebay for about 30 pounds hope this helps ivan
Well first I would check the fuse box for burned out fuses. Then I would get a simple dc power tester and see if the windshield wiper motor is getting power. If you don't have a bad fuse and the motor is still getting power I would say the motor has burned out.
Pull the connector off at the wiper motor, and see if you have power there, with key on and wiper switch on.. If you have power there, either the motor is not working or the ground for the motor is not good. I guess these older cars had relays for this? Or maybe just a fuse, like 30 amp? I don't know, if it's a common problem, you may have to find out through an old car guy, like a retired cadillac mechanic. Or, I'm sure there must be an enthusiast's forum for older cadillacs, if you google cadillac. Good luck.
Check all of your fuses and don't forget to check the ones in the engine bay also. If those are fine then you have to remove the switch and verify that it's getting a 12V power feed. If that works then the switch should but you'll want to test a good with it too.
If the switch checks out then you'll want to test the wiper motor.
The defroster is another animal though. If there's a break in the wiring leading to the window itself then they'll need to be replaced. If the connector popped off or if there's a broken trace in the window that can be fixed but ONLY BY A PROFESSIONAL.
The reason I say that is because if you try to solder any of those parts on to the window (which is tempered glass by the way) the glass could crack or break.
In the end, it would be easier just to replace it.
I haven't tested one yet but I'm going to guess that you may need to remove the tailgate liner and have the tailgate shut when you flip the switch and test with a voltmeter or test light.
If that detects power then the wiring is fine and the easy-ish part will be to replace the wiper motor.
u definately have a nake wire thats causing this scenario. U can start tracing it from your stop-light switch into main power supply loom. Make sure u tape any naked wires and replace broken fuses. Good luck.
1. check the fuse to the rear wiper motor
2. check for power to rear wiper motor at the motor (power wire going in to the wiper motor with rear wiper switch on)
If you have good fuses & have power going in to the rear wiper motor...
3. Pull old rear wiper motor and install a new rear wiper motor.
Thank you please drive thru......