Behind the dash of my first Jeep Cherokee looked like someone was practicing their electrician skills very badly. I pretty much had to rewire everything to make everything work properly. But, there was a wire that I just could not have connected that was in the back of the jeep on the hatch. The reason for this was that if the wire was connected to the other side it would blow out my dashboard fuse and everything would go dark. This is something that I knew about and I just left it there unconnected. Well my one night, at around midnight or so, a friend says "Hey you have a wire disconnected back here." and before I had the chance to tell him not to connect it he did and all the lights went out while on the highway. Needless to say I had to pull over and change the fuse, after that I just cut the wire.