This is just so classic:

First the radio getting swiped now this. So I started it up yesterday and was letting it warm a bit before driving out of my garage and I absent-mindedly pushed in the lighter. What happened defied all logic and belief! All the idiot lights lit up momentarily, I think a warning chime sounded, the voltage gauge dropped to zero and the car shut right off, dead, no more idiot lights. I've checked every single fuse and relay and they all seem fine. The interior lights still work, headlights work, you turn the key and no idiot lights light up and it will crank but not fire...

I can't help but think a ground has gotten bodged up by the theft of his stereo, but that's just a guess. Sometimes having a simple car with a cheap radio is a good thing!