It's definitely a short somewhere in the circuit. Do NOT increase the fuse size over stock...you're just asking for burned up wiring or vehicle. Has there been any work done recently?
i know i should increase the size but i did it to try, and im not aware of any work being done i really dont think it has.
97 GTP DD, 1952 Ford F-1 Resto Project, 2006 Mustang GT "UnDeR CoNsTrUcTiOn", 02 GPGT SOLD!, 98 GTP Parted/Scraped