Always start simple and work your way out. I've got hella dual-horns. I'd hate to hear those constantly going off!
The master switch sounds like a good place to start. I know on the ZJ's that if you switch it, you can't use your keyfob, as it ties in with it somehow. Not sure if the WJ's are the same way or not. Found that out when I switched out my door panels and suddenly couldn't open the door without the key.
The beatings will continue until attitudes improve!
HID Quad bi-xenon + foglight retrofit