UPDATE: Audi window switches [detailed/long]

["Tobias M-G" <scirocco16v88@hotmail.com>]

Alright, after taking apart a VW and an Audi switch, I have come much closer 
to a resolution, although on my car ... well, see bottom.

Wire colors and what they're supposed to do (note supposed to.. see comment 
at bottom), courtesy of TBerk who looked it up for a VW:
** Numbers are location on switch where wire attaches
4 Brown wire- Common ground
3 & 5 Red black wire- power (two wires attach to switch but are linked 
before - so one main red black power wire)
1 White wire- window up
2 White black wire- window down

Connect red/black and one of the white wires, window goes /\ or \/, other 
side of switch grounds the other white wire.

Colors are different on the Audi (even door and center panel colors differ) 
Essentially though the wires hook up at the same points, 4 Ground, 3&5 
Power, 1 window up, 2 window down. The difference in the AUDI switch is that 
the power wires and switch direction wires are each connected internally. In 
addition one power wire is connected to the LED (lightsource) which connects 
to the ground (there is a transistor before the LED .. I don't know what 
this does. When you click the switch it grounds one of the window direction 
wires (the other when clicking the other direction).

I don't follow the logic behind this, I suppose an Audi wiring diagram would 
help ... one direction is always grounded (which would activated it) due to 
the LED. Obviously hooking the wires up by the numbers VW-Audi should not 
work since both directions are always powered.

My solution (also in part due to the horrifying wiring mess the PO made out 
of the window switches and alarm etc) so far is that:
You use only one power wire, hook it to the #4 on the Audi switch. Up wire 
goes on #1 and down on #2 (or in reverse depending which way up you like the 
switch), ground hooks to #3 and #5. YOU MUST cut the LED connection at point 
#3 or else you will power a direction (because ground and direction always 
on both sides). That leaves the LED and what to hook the other side to ... 
which I have not figured out.

Here's my Note:
On my car, because of the wiring nightmare, none of this holds true. The 
driver side window now gets power on the ground wire, and the power wires do 
jacksh**t. ((((in fact all wires are dead unless I hook up the ground wire 
from the universal module he installed to the ground wire .. which then 
powers the switch))) I wired the switch in as above, but no ground on #3 and 
#5 .. instead, the cut side of the LED is hooked up to the red/black power 
wire - which, when the ignition is turned ON, lights up the LED. Hummm, it 
works, I don't know how, and I'm missing grounds for the direction switchs 
... the whole setup is bizzare .. I don't know what the PO was thinking. I 
have a bad feeling the passenger side is set up the same way.

I think I might have the horrible task of redoing all the wiring the PO did 
sometime in the future to get everything right <SOB>

Only the Magical wiring fairy can tell me now that he's powering the alarm, 
windows, dome light, possibly the power sunroof and god knows what else from 
the same source.

Waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!!
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