I was digging around under the dash to find a wire that'd been disconnected from the stereo, and this little light bulb sorta appeared. It lights up just fine, but where do I poke it back in?

looks like for the ventilation slide control panel

one of the two lights for the dash-vent-controls ...

they slide into a small socket on each side and make ground through the assembly ...
Andy

Ok, I'll see if I can get it back in there without taking much apart. Otherwise I'll just poke it out of the way until it fits into a "while I'm in there" situation!

Thanks for the answer!

Trivial observation: I discovered tonight that moving the Fan slider changes the brightness of the little light...