1986 4000S, Red bulbs in switches

[Peter Biernacki <pbiernac@ea.oac.uci.edu>]

The car in question is a manual 1986 4000S with a 1.8L 4 cylinder
engine (7/85 production date).

The headlight switch, hazard light switch, rear defroster switch, etc.
all have small red bulbs soldered in place.  Does anyone know what the
Audi part number is for those bulbs?  My dealer seems to only stock white
bulbs, but I know for a fact they are suppossed to be red.  If one can't
buy them from Audi, is there some other source?

Thanks,

Peter