Bobcat S250 Alt/Kit Fuse

The fuse 11 with is 25 amp for the Alt/Kit keeps blowing. Its on a 2005 Bobcat S250 with ACS. When it blows the heater fan quits, the wipers quit. The machine does not have a backup alarm installed nor a horn. I have traced the wires and tested the wires with no shorts. Once the fuse is replaced it will work for a little while them ultimately blow again. Any ideas? Alternator going bad? Blower motor going bad? Any other ideas? Any help would be greatly appreciated.

Bobcat S250 Alt/Kit Fuse