Not been here for a good few years but still have my GTI and trying to get it through the MOT due to a couple of niggles!!
Failed on horn not working which cause me to do loads of wiring checks inc removal of fuse box. Now it’s all back together when I switch on the high beam the headlights go off ! I also have no flash. It was working ok before I had it apart.
Following going through all the similar threads on this site I have confirmed the relay (far left) in the fuse box is working by swapping it with the electric window one and then swapping back, and also changed the relay near the expansion tank and confirmed it is working. I have also fitted a new indicator stalk.
I suspect the one thing that MIGHT be contributing is the loose wire that I have found when going back to the fuse box! It is stamped 6J and has a single plug on it but I can’t for the life of me see where it connects to nor can I even find it on the wiring diagram. Any electrical gurus help?
many thanks