One headlight out '97 Camaro

For some reason these $30 sealed beam headlights burn out about every 3 months and its really irritating. I thought my passenger's side headlight burned out again so I replaced it but it still doesn't work. Any suggestions? I checked the wires etc. but didn't find anything cut or frayed. Another thing is I can't find the fuses for the headlights. I checked the box under the hood and there was a slot labeled "R HDLP" and "L HDLP" which I figured stood for right and left headlamp but maybe I'm wrong. Both of these fuse slots were empty. The driver's side headlight works fine as do the tailghts. Thanks.

There's been a rash of this going on lately and perhaps one of the other posters threads has an answer for you.

Moisture is the number culpret in premautre light failures.

My problem mirrors this one identically, so if you find anything useful would you mind posting it here? I would greatly appreciate it. thanks