According to the map on the 108 fuse box "fernlicht" is high beam and "abblendlicht" is low beam. and in following your symptoms "kontrolleuchte" is the high beam indicator.
Not sure how much things have changed or stayed the same, but on the 108 the right high beam and indicator are on the same fuse. #9 Frenlicht rechts u. kontrolleuchte.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.