Now you can download a hi resolution E30 fuse box diagram here or find it later over on our E30 resources page!
The fuse box is where you want to start with many problems you may encounter with your E30. While relays rarely go bad, it’s still very possible. One thing you can always do to test a relay easily is if your Horn is working, put that relay from K2 into the Low Beam K4, or other slot which you’re trying to get working.
Make sure you’re downloading the original hi-resolution E30 fuse box diagram here!