Post Master General
Join Date: Apr 2012
Location: Bowling Green, VA
I Ride: '09 ZX6R
Fuses let go, because the circuit they are protecting is consuming more current than is expected.
If you inspect the wiring harness very closely I would expect that you will find a point where the insulation has been compromised. That's likely causing a 'hot' wire to make contact with the frame or some other metal on the bike.
Pinched wires, or rubbing wires. Look for wear, or discoloration on the insulation or the metal it passes by.
It is a good idea to start the inspection wherever someone has modified the OEM harness. Even great workmanship can degrade over time. Bad work can go south a lot quicker.
"Basic stuff fellas. Use your head for something other than to break your next fall."