OMFG... I can't stand it....
Please make it stop...
OK, your bike has just
one fuse for the whole bike.... lights, iggy, horn, turns.... you name it...
ALL those circuits run on
one fuse. So, if the horn shorts, the fuse blows, rotors shorts... the fuse blows. Ya followin'?
The idea behind this is to put a fuse on
each individual circuit so you ain't chasin' your tail 'till social security kicks in, tryin' to figure out which circuit is shorting.
Two scenarios.... One fuse feeding 5 circuits... fuse blows... which circuit caused it? Yeah... no way of knowing is there? Any one of the 5 coulda done it.
Second scenario... 5 fuses, each feeding 5 circuits.... fuse blows.... now it's pretty friggin' obvious which circuit caused the fuse to blow ain't it? 'Cause each circuit has it's own fuse.
Your short is blowing a 20 amp fuse. In other words, it don't matter what size fuses you use, just stay under 20 and isolate as many circuits as you can. Size don't matter, the number of fuses does matter. And in this case, the more the merrier.
Jeeze, this ain't rocket science. It's not like it's gonna blow up 5 miles in the air. No wait....