Fun with directional wires HELP!!!

[Kisner]

Odds are this isn't your problem, but I had a similar problem where my brake lights, turn signals, and instrument lights on my 68 would all work only occasionally. I tried everything known to man, including replacing all the fuses, and couldn't fix it. My last resort was to check the fuse box itself and I found it was covered with a pretty heavy layer of surface rust and some of the prongs that hold the fuses in were loose. I spent about an hour with a very small piece of sandpaper and cleaned it up real nice and used my needle nose plyers to slightly bend the prongs in tighter. Replaced all the fuses and it solved all my problems. This was, however, 2 months later after I started trying to fix it - dumb me tried the easy stuff last. Might be at least worth a look.