Wiper Motor ground wire??
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Wiper Motor ground wire??
Getting there.....bit by bit! I have the wiper motor wires figured out, and ready to go. Now, where the heck does the "grond wire" for the motor hook up? My 3-prong plug has a home, and the red-wire plug found its mate, but the ground wire is just sitting there with no place to plug into. My old motor was long gone, so no reference material to look at. The gound wire is a one-plug setup, but it has two ground wires coming out the back side. It references perfectly to the wiring diagram ('71, not '72, but close!) and the location (it cannot be for anything else because of length). Man....I hate wiring. Can I splice it into the wiring that comes out of the little grommet on the wiper motor, it seems like there are 2 wires coming out. 1 pos. ...1 neg???? So close..so close......
Team Owner
Joined: Jun 2001
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From: Virginia USA
Re: Wiper Motor ground wire?? (72Shark)
There should be a spade connector under one of the wiper transmission cover bolt. All you have to do is ground the case of the wiper motor. You'll find the ground wire going down to the blower motor in some fashion. My best guess is a 1972 is not that different than a 1971 and thats the way mine is. :smash:
Team Owner
Joined: Jul 1999
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From: Orange Park Florida
Re: Wiper Motor ground wire?? (72Shark)
It would require slicing open the wrappings of the harness, but there is a ~10 ga black wire with a 3/8 eyelet on the end, that goes to ground aroudn the starter motor somewhere...that is the engine, NOT the battery positive...
so that then grounds 3 things I know of...the common ground side of the high speed blower relay mounted on the evap housing....the heater blower motor frame/negative and the wiper motor frame...which is ground for the wiper system in the engine compartment....but there is a ground through the FRAME of the gauges in the pass compartment, and if it's broken the wiper switch will not be grounded, so it will not operate the wipers.....you can run a jumper wire to work around that fault....
the wiper motor has a brass spade grounding terminal on the frame, under a bolt....lower driver's side of motoer housing....on front face...supposed to be fairly obvious...if ti's there....
GENE
so that then grounds 3 things I know of...the common ground side of the high speed blower relay mounted on the evap housing....the heater blower motor frame/negative and the wiper motor frame...which is ground for the wiper system in the engine compartment....but there is a ground through the FRAME of the gauges in the pass compartment, and if it's broken the wiper switch will not be grounded, so it will not operate the wipers.....you can run a jumper wire to work around that fault....
the wiper motor has a brass spade grounding terminal on the frame, under a bolt....lower driver's side of motoer housing....on front face...supposed to be fairly obvious...if ti's there....
GENE
Safety Car
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From: St. Charles IL
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Re: Wiper Motor ground wire?? (72Shark)
If your spade terminal is missing, Just visit any Radio Shack, or maybe even the hardware store, You should be able to get one easily. Like Gene said, it attaches to one of the lower screws holding the wiper motor assembly together.
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Re: Wiper Motor ground wire?? (Big Fish)
mrvette.."GENE"...what is this??
"......the common ground side of the high speed blower relay mounted on the evap housing",....from your previous post??? Where is this located, and how would you describe the plug fittings?? This is REALLY helping!!! I did not know that the wiper switch needed to be grounded!!!
"......the common ground side of the high speed blower relay mounted on the evap housing",....from your previous post??? Where is this located, and how would you describe the plug fittings?? This is REALLY helping!!! I did not know that the wiper switch needed to be grounded!!!
Le Mans Master
Joined: Oct 2001
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From: Wildwood IL
Re: Wiper Motor ground wire?? (72Shark)
If you check the wire diagram, you'll see that the wpr motor grnd is linked to the blower grnd. Both components grnd wires are soldered into one, which continues down to the bell housing and is grounded/connected there. Also have the interior switch grnd as mentioned above. I just went through this too, but had to unwrap the engine harness to repair the two wire link. PITA!!!
Good luck
Eddie
Good luck
Eddie
