Re:

[Huw Powell <human@nh.ultranet.com>]

The rear switch is grounded independently and it's two other inputs are
passed along from the front switch.  It passes them along in neutral
setting, and uses them to get 12V when being operated.  The information
you give does not rule out a bad rear window switch, although if both
aren't working it does seem to incriminate the safety switch.  You plan
of running a ground jumper seems a valid (but fuse it to be on the safe
side - 10A) way to test it.  better yet, test the safety switch, give it
a better ground.

> Can anyone verify that the ground on the three wire plug to rear window
> switches grounds the rear switch and the light. The car is an '86 4kcsq. My
> drivers side, _rear_ switch stopped working (no light either) - though the
> window operates fine from the _front_ switch. It looks like the front
> switches for the rear windows are separately grounded ( not through the
> child saftey switch as it appears the rears are). So I'm guessing it's the
> ground and I should be able to test by running a new ground from the brown
> wire connection on the the rear of the switch. Any BTDT?

-- 
Huw Powell

http://www.thebook.com/human-speakers

82 Audi Coupe; 85 Coupe GT
http://www.nh.ultranet.com/~human