I have to constantly replace my tail lights bulbs. Looks like some sort of wiring problem or maybe the socket problem... Did anyone have a similar problem? How did you fix it?

Do you have a trailer harness plugged in?

if so remove it.

Do you lose your brake lights too?

When I first got my 93, last year, it would blow the fuse for the tail lights but not the brake lights (2 different circuits). Not quite the same issue, but I had a short in the wiring somewhere. I couldn't find the short anywhere, so I fixed the problem by bypassing the original wiring and ran my own to the wires that went to the tail lights. Probably not any help for you though. Maybe a loose ground???