90 A/C head unit quits then interior illumination

Steve Ensch ensch1 at comcast.net
Wed Dec 18 23:37:21 EST 2002

Your probably right.  I remember a similar event in my VW fox, it seemed
everything was grounded to a single ground.  I will know more soon.  Thanks
for the advice.


-----Original Message-----
From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
Behalf Of Dave Hord
Sent: Tuesday, December 17, 2002 12:39 PM
To: Steve Ensch
Cc: Quattro
Subject: Re: 90 A/C head unit quits then interior illumination


I think it may have to do with the 'common ground' that Audi likes to use.
stated in the previous thread by another lister, Audi likes to daisy-chain
grounds together...it's kinda like christmas lights.  When one item is
disconnected, they all don't work.

I know that in my Audi 90 quattro, if I don't have the three auxillary
plugged in (the actual gauge, ignoring the lamps) the instrument cluster
don't work.

You could also have a short, due to your climate control being disconnected,
therefore blowing the fuse.


-Dave "ever thankful I have manual  climate-control" Hord
89 90q  300km+ Rally Conversion...
Roll cage shots available at:

Quoting Steve Ensch <ensch1 at comcast.net>:

> My climate control head unit finally quit after working intermittently for
> about 3 days. But now after driving around with the control unit removed
> the
> interior illumination just quit.  Fuses are good but I am thinking this
> sounds similar to the other thread going around the list concerning the
> with illumination problems.  Any ideas?  Or do I have to take the dash
> steve

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