Hi All

My newly acquired 1994 Audi 80 Sport is due for an MOT on Friday 13th!!!

I have a problem with my headlights. They work fine on sidelights and dipped headlights. The main beam works when flashed and the blue main beam warning light comes on at the same time, but...when I move the stick forwards to put the main beams on, all I get is sidelights and no blue warning light. Since they work on flash, I know that the bulbs and fuses are OK, so could it be a relay? Is that more likely than the switch itself?
Any help please, as the test is looming!!!

TIA

John