We all know how notoriously lousy the stock Fuse holder / fuse box is. If they are old, the connections get really corroded, can melt the plastic, and even have a possiblitiy of an electrical fire.
In my experience, I have ditched the stock fuse holders all together. I never liked those cylindrical fuses either.
What works amazingly well is to just cut the wires and crimp on female spade connectors to the feed and draw side. Then take an appropriate 12v blade type automotive fuse and put that in-line. Viola! Cost? About $2!
It not only eliminates the fuse-box, but you can eliminate the connector clip that connects the fuse box to the main wire harness as well. My theory is: eliminating electrical connectors = less resistance = higher voltage.
I relocated all my eletronics under the seat, so these pictures will look a little different than stock configured bikes.