Lights out.

[n33k0]

My list of things that need fixing on the truck is getting longer every day, but I have an issue now that has me scratching my head.

The lights inside the cab of my 1972 C10 have stopped working. One night, everything worked fine, the next night none of the gauge lights nor the dome light will turn on. I had recently replaced all the bulbs in the instrument panel and they had been working fine for a few days. Now the only lights that work in the cab are the turn signal indicators. Luckily, none of the exterior lights are affected, so I can still drive at night, I just can't see my gauges (unless I drive under a streetlight )

I checked the PNL LTS fuse (panel lights?) and it was ok. I had slammed the door pretty hard right before noticing the lights were not working, and my first thought was that I knocked a wire loose, but I can't see anything out of place in the tangled mess under the dash. Any ideas where to start troubleshooting?

Thanks in advance
-Nick