If you are using the wires that go directly to the motor, up/down is
determined by reversing plus and minus.  No connection to the housing is
needed.

The diagrams for the window circuits are quite challenging.  Just finding
them in the Bentley is often impossible for me.   :-)

Larry A.

On Wed, Sep 6, 2017 at 12:15 AM, KI4TLF <ki4tlf@gmail.com> wrote:

> I need to run my power window down on a '90 Carat so I can remove the
> window
> and components from the door.
>
> Stared at the drawing til I'm cross eyed, but am no good at electrical
> drawings.
>
> Does the power window motor use the housing as a ground and the power
> switch
> wires to go up or down?
>
> Or does it just reverse the positive and negative to go up/down?
>
> Thanks,
>
> GregM
>