Funny thing that this came up. Had the same problem when I had my Integra. Taillights would go out, along with the gauge cluster, since I'm guessing they were on the same fuse. When I put my taillights back in one day, I put the wires on the wrong side of the rubber gasket that was there, and the protective coating wore through and touched the metal and always grounded itself out, good thing for fuses or I would have had a more serious problem
I fixed the problem and got a new harness and never had an issue again.