I have a Panasonic (can't remember the model number, it's few years old and the one with all blue lights) head unit in my 97 Taurus. Worked fine with no trouble until tonight, when I started my car, the head unit didn't come on, no lights, so it looks like no power going to it at all.
Havent, that was my first thought though. It happened at 10 at night so I figure I'll wait till tomorrow to check it... wanted to gather some ideas tonight.