Here are the guts of the master switch. Trasborg tells me that he hit the hazards one cold winter day, and couldn’t get them to shut off. He also told me that over time, other things seemed like they stopped working, until the headlights stopped and he had to stop driving the Jeep at night. So, I figured some little tab or spring was loose and got gummed up in other stuff. After breaking a tab getting the switch out, I pulled it apart and immediately several small parts jumped out. I spent a couple of days finding them all, but in the end there was just no way to put it all back together and make it work.