1997 Yamaha YZF 600 keeps blowing ignition fuse

I have a 97 Yamaha YZF 600, after a ride last week it died, checked the fuses and the 7.5 amp ignition fuse was blown. I tried new fuses but they popped right away even tried a 15. After getting the bike towed home I replaced the 7.5 amp fuse and it was fine. Suspecting a bad fuel pump when it gets hot I fused it as well to try to isolate it. Last night's ride ended the same way, now I'm suspecting coils. Am I going in the right direction? It only does this when the bike gets hot and cranks fine but on the side of the road it's hard to determine what's not working, the bike is carbureted not FI