Instead of getting those miniature light strings, why not try the ones that use the big screw-in type bulbs (the ones that look like candelabra bulbs but use an intermediate base)? Those seem sturdier and the bulbs are standard so you can always screw them in and out when you need to replace.

I don't care what UL says or does...those cheap little speaker-wire strings are too flimsy for my taste. I wouldn't want to put one of those outside. I've had one where the contacts pulled right out of the little sockets.... grrrr [Linked Image] [Linked Image]