66 SS wiper motor problems - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
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post #1 of 4 (permalink) Old Feb 10th, 14, 11:02 PM Thread Starter
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George
 
Join Date: Dec 2006
Location: Illinois
Posts: 295
66 SS wiper motor problems

1966 resto mod with AAW wiring kit. Windshield Wipers making me crazy.
Will not shut off, consitantly. Checked grounds OK. What I do not understand is why the first position on the switch closes the ground to both the high and low speed. While the second position on the switch only grounds the high speed side. The following is my diagnosis coming from the switch to the wiper motor.
Switch low speed high speed washer
Position black lt blu dk blu
off open open open
push
clean closed closed closed
clockwise
one click closed closed open
clockwise
two clicks open closed open

What I do not understand is why the low speed has the high and low side grounded. Any help is grateful. Thanx

george
66ss396
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post #2 of 4 (permalink) Old Feb 12th, 14, 12:03 PM Thread Starter
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George
 
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Re: 66 SS wiper motor problems

Been sick, just realized how poor my switch descriptions are.
How is this?
Switch position Low Hi Washer
Black LtBlu DkBlu
Off open open open

Push washer closed closed closed
clockwise
one click closed closed open
clockwise
two clicks open closed open

george
66ss396
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post #3 of 4 (permalink) Old Feb 12th, 14, 12:08 PM Thread Starter
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George
 
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Re: 66 SS wiper motor problems

Well apparently the software does away with my attempts to put this in columns. Anyone who understands washers help. Interesting thing is that when the motor will not shut off I feel the washer pump cycling.

george
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post #4 of 4 (permalink) Old Feb 15th, 14, 1:43 AM Thread Starter
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George
 
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Posts: 295
Re: 66 SS wiper motor problems

OK, after much hand wringing, bench testing the motor, bench testing the switch, and crying, I finally figured it out. Not sure how it happened but the black high speed ground wire is connected to the switch as the washer ground. And the Dark blue washer ground was run to the high speed side of the motor. I finally realized this when checking continuity to ground at the wiper motor. So I switched them and everything works fine. I may have scrwed this up at the switch, when I wired the dash, or at the front motor harness when I removed the electric oil pressure wire, not sure. The answer was here on this site but I obviously had to keep looking for the solution.

george
66ss396
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