Ironically enough I had the EXACT same problem and EXACT same cause about
six months ago...  Someone (PO) had spliced in a short section of wire
inside the boot between the drivers door and frame.  Over time the spice
became corroded and after several months of the window getting slower and
slower it finally stopped.  I couldn't figure out "why" the splice had been
done, but regardless I replaced all the corroded wire and then some.  Then
covered it all with heat shrink tubing.  The window is back to full speed
now :)

Tracing the wiring is not too difficult, but do be aware that power for the
passenger door windows goes form the fuse block, into the drivers door,
through the switch, back out the drivers door, and over to the passenger
side.

Good Luck,
Jon

----- Original Message -----
From: "developtrust" <developtrust@COX.NET>
Sent: Sunday, May 18, 2003 10:44 AM
Subject: Re: Power Window Failure Diagnosis

> I just fixed mine with the same problem a few weeks ago. It was a broken
> wire in the driver side door boot. I sliced it open with a razor to access
> the wires and found the broken one. Fortunately for me the broken wire was
> right on top. I spliced it and  taped up the boot with electical tape
after
> cleaning the rubber very well with paint thinner. Works now like new.
>
> William
>
>
> > Symptoms: Passenger window inop - neither up nor down
> > from either the drivers and passenger side switches.
> > Little lights on each switch are illuminated, however.
> >
> > Looking at the wiring diagram for my '90 in the
> > Bentley, it looks like if there is power to the
> > switches, then the lights will be on when the ignition
> > is on, and they are.
> >
> > However, when either switch is activated the lights
> > dim substantially. Would this dimming correspond to
> > the motor being burned out?
> >
> > (I know I can pull the upholstrey panel and test power
> > to the actual motor and then see if its not
> > responding, but right now I have my diff lock all over
> > the garage floor, and I am just starting to think
> > about the window as my next task)
> >
> > Thanks
> >
> > Tom F.
> >
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>