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Old 03-23-2024, 10:03 PM   #10
Getter-Done
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Join Date: Dec 2009
Location: TN.
Posts: 7,765
Re: Power window Buick

Quote:
Originally Posted by Getter-Done View Post
Wires sometimes break where they run through the door.

They may not appear to be broken because the insulation is still intact.
I think you have a Wire in the harness that is Broken.

Quote:
Originally Posted by RustyPile View Post
The switches not only apply voltage to the motor, but they also switch the polarity on the motor.. Unplug the harness form the motor and connect a test light to the 2 wires.. Do not connect the light to a ground source.. If all the switches, relays, and wiring are intact and working, the test light will light up when the switches are moved up or down.. If the test light lights up both ways, the motor is bad.. If it light up in only one direction, it's time to dig deeper for switch failure, and/or wiring failure. If ANY of the other windows work as they should, you do NOT have relay problems.

An LED bulbed test light will not work for this test. You have to use one that has an incandescent bulb in it.
Great explanation.

I neglected to add the workings of the Motor with 2 wires and that one is (Power up) and the other is (Power down).

I was working on a remodel of my Kitchen.
And sneaking in to keep up on the Forum.

Quote:
Originally Posted by kaycee View Post
Ok did that light works on the up side but not on the window down ,
That wire needs power also.
The regulator grounds thru the mounting screws.

These newer Vehicles are not as simple as our 63 Impala's
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84 Chevy K-20
63 Impala (my high school car)

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