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Topic: Power Windows

in Forum: C3 Electrical


Power Windows

Posted: 8/24/02 3:14pm Message 1 of 4
Former Member
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Canada
Joined: 3/4/2002
Posts: 11
Vette(s): 1977 original silver, now classic white with black leather int. L48, T-top
Hey y'all !
Regarding power windows...
Does anyone know how the power window circuit is grounded ?
Is it grounded where the pw motor is bolted to the door frame or somewhere else ?
I have a funky passenger side window motor (it isn't blown yet) and I have tried
various ways of hot wiring it (slight up/down movement).
I am thinking I have a bad ground but don't know how the circuit is completed, grounded.
I have tried a straight bypass to the pw motor, (moved an inch or so)
Has to be a ground problem right? But where is this circuit grounded ???
Thanks in advance for your input !
DYZA77

}:^)>
|bouncy|


Dyza 1977 L48 White on Black |IMG|http://www.c3vr.com/member_uploads/701_800/751/c3vrdood.gif |/IMG| |IMG|http://www.c3vr.com/member_uploads/751/dyza77.jpg |/IMG|
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Power Windows

Posted: 8/24/02 11:04pm Message 2 of 4
Lifetime MemberLifetime Member
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Joined: 1/29/2002
Posts: 1049
DYZA, according to my 82 GM shop manual, mine is grounded through the body. There is no ground wire to the motors themselves. Is it only one that doesn't work or both on occassion?


Power Windows

Posted: 8/27/02 7:38am Message 3 of 4
Former Member
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Moon Township, PA - USA
Joined: 12/3/2001
Posts: 42
Vette(s): 1972 Bryar Blue LT1 Coupe 1966 Rally Red Convertible (sold)
When we rebuilt the passenger door motor in my friend's 73 we noted that the two blades on the electrical connector are hot. The motor is grounded through the metal in the door. When power is applied to the up side the one blade is used. The other blade on the plug is for down. You can confirm this using a 12 volt power supply like a battery charger and ground your motor. Then, using a nail or other pointy object, touch one connnector to the motor.
Gary


Power Windows

Posted: 9/4/02 7:22am Message 4 of 4
Limited Member
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YORK, PA - USA
Joined: 11/12/2001
Posts: 14
Vette(s): 72 Convertible 350 base 4spd A/C Milli Miglia Red Black int. Original numbers, 150k miles
Sounds like the motor is going. If you need a new one any Chevy PW motor should fit, particularly Monte Carlo


in Forum: C3 Electrical


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