1992 Buick Century V-6 blows gauge fuse Intermittently

My 1992 Buick Century blows the 10 amp fuse for the gauges intermittently. Oddly, it seems to be heat related and even more oddly it seems to be heat related inside the passenger compartment of the vehicle. When it does happen, a fuse may be able to replaced immediately or it may take several hours, before it will hold a fuse with the key on. When it will not hold a fuse, there seems to be a direct short, as if you try to put a fuse in with the key on you will get quite a spark. I also confirmed this by trying a 30 amp fuse, when it will not hold a fuse, and it blew the 30 amp fuse immediately also. I have checked the wiring coming out of the fusebox and it seems to be intact
Any help would be appreciated
Thanks
Don Smith