Originally posted by Berbs:
Should I check them again?
Yes, check them again.

This sound like the same problem that I had a few months back. My friend and I were sitting in my car, eating a hamburger. The park lights were on, so was the stereo and the heater. The engine was idling.
I hear a very faint -psssffftt- The sound of a wire melting. The car is still running, but some smoke comes out of the cowl panel directly in front of me. We drive the car back to the place he was working and pull it into their loading garage. I turn it off. We finish some things that he and I were working on, and I go to leave. Nadda. Exactly the same problem that you are describing. I hadn't the slightest clue what went out and it was 3am so I didn't want to look. I reconnected the burnt wire, though I never found what made it melt. That didn't work so I hotwired it and drove it home.
I looked and looked. Thought I checked everything twice. Turns out there are two small blue plastic fuses in the power block. I checked them, one was bad. I bought a new one and thought I dropped the good one in, I actually put the bad one back. The car still wouldn't start. I hotwired it again and drove it home.
I was out cleaning it the next day and came across the good fuse. I put it in and everything worked! I haven't had a problem since.
Your headlamps won't work right now.

If you can get your hands on a continuality tester go pull those two blue ones. Turn on everything that you can, and close the door. Touch one lead to the neg battery terminal. Touch the other to one of the two connections where those fuses were. If that pulls nothing, test the other. IIRC, the terminals closest to the firewall are power -out-. If this is showing a good circuit, you haven't fried anything else. Now test the fuses the same way. The blue fuse that is closest to the airbox is the one that I had fried.
Sorry for the long reply. I hope this helps.
EDIT: Yes those red wires in the pic above are fused, twice.
