Hi there, this is my first post, not too sure what i'm doing but here goes!!
I have a mk4 Golf - it's a GTi 1.8 20v (non-turbo) 1999
It had the standard red/yellow rear lights that you see on the base models, and I thought I would change them to the gti versions. On changing the drivers side lens I dropped one of the nuts down the back of the light (where the wiring is for the 12v socket but about a further 3 inches down). When I shone the torch & peered down I noticed there was a lot of water in this area, (and I dont think there should be!), the nut was actually submerged! After soaking it up with tissues it all looked fine but I noticed the drain tube in this area was just dangling there. After fiddling for ages & cutting my arm to bits I managed to push it back into the rubber thing it's supposed to go in but now I'm a bit worried where else the water may have gone. Does anyone know if this is a sealed area or can water get elsewhere from here where you can't easily check (eg under back seat/sills etc?)