are you talking about the rears?......if so the original smoked rear light clusters on my gti were not hollowed out, so i broke out the plastic bits and scraped out the hole so bulbs would fit in, low and behold the rear fogs now work, a bit lazy on VW's part.....
bit like the mk4 switch for the wing mirrors, they have a position for folding away but it does nothing, same switch as used on the leon, which does fold away