A while ago, my son decided that MY car needed a new radio/cd player.So he bought a new one and installed it himself, knowing very little about such thing.After that, the it started to blow the fuse on the right side parking light and everything else on the same line, including instrument cluster illumination, so
when driving at night, no light to see how fast I'm going.What could have gone
Car is a 318i 86 model.
Also, what is a "check control" and where is it placed.
Any help please.