I have an '89 with 22k on it, and I've had the same problem.. I always blow out my main fuse. My headlight is also intermittent, and I only have half the lights on my dash that work...
I've been looking at replacing the wiring harness, but have been hesitant on doing so. What all do you have to do to replace it? How labor intensive is it? I'm not too mechanically inclined, but I can take things apart and put them back together properly.. most of the time
'89 Vulcan 750 w/ 22k miles.
10" ape hangers
Kury Goldwing Iso grips, dually foot pegs, Magnum Plus mirrors, brake and shift peg covers
Dunlop K555J 170/80 rear and D404 110/90 front