I've got 'Hot Hands' from Oxford products on my Bulldog, nice and warm in winter and you can take them off for the summer
ive got a gpz 550 and last week it blew one of the fuses,i replaced this and a few miles down the road it blew the replacement,its a 15 amp fuse ,i noticed that the rear light also went out,
Earthing problem somewhere inline with the fuse? Maybe what ever the fuse supplies has an intermittant short circuit to earth somewhere, this would cause the fuse to blow. Hope this helps.
Same thing happened on an old CB900 I had, took me over a month to track down a short in the rear wireing loom (crushed wire under the seat).
This sort of thing can drive you absolutely crazy, when it does just walk away and come back to it later, you will find it, it's just a matter of luck as to how quickly
Good luck and keep us all informed of how much hair you have left at the finish line