Right i have finally bit the bullet and taken the car to a garage first time for everything to try and sort out what's happening to my dash lights, got told that the dimmer doesn't work power going in but not coming out phoned Tps just in case but NLA im not supprised just thought i might be lucky anyway i have entered the group buy for S2-Bo's plasma gauges the question is do i still need the dimmer switch to make these work if so then i will need to source a set of S2 clocks or would any Audi 80 dimmer work or is there a fix i can make work.
Dimmer Switch Help
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You still need the dimmer to light up the needles and the lights for the heater controls. I would say that a dimmer from any 80 would be the same, it's reasonably easy to swap, bolted to the back of the clocks, can't remember off hand if there's anything else to remove first. -
I've a set of damaged 2 l clocks already off.
If I get time I'll take a look at the dimmer for you.Comment
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Instrument cluster lighting rheostat, PN 443919093AC
The dimmer switch/clock setting control, PN 443919093AC, is bolted to the instrument cluster printed circuit board as shown below. This switch was used as far back as 1988 C3s, B3s, B4s, Cabriolets and C4s. Should be possible to find a good used one.

This one shows the nuts that hold it tight to the PCB.

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