I'm very anti-technical, so please bear with me.

The lights we had in the enclosure were only on for maybe a half an hour, and one popped then went dark. They are wired in series, and I believe the one that popped was the second one. We figured it was from the heat it produced (way hot), and LED just didn't seem bright enough at the store to bother messing with.

I think we'll try a lower wattage flourescent bulb, then if we have to, go with the LED. I used to have a rope light that gave off some good light, so I'm hoping we can get something similar in brightness...