So my horns, like normal haven't worked very well. Today I was mess around with them and installing new Hella super tones. One of the PO's had a jumper from ground wire on the drivers side horn to the passengers side. I decided to not wire up a relay for the Hella's just to see how they sounded spliced into the factory wiring. Well, I removed the jumper to try to figure out what the issue was and of course obviously, the passenger side isn't working. I'm guessing the ground wire is broken somewhere along the harness since I'm getting 12v on the positive side. My question is where's a common place that this may have broken and where is a good location to test on the harness to start testing? Are there any diagrams of the harnesses themselves.