BJB Fuse F26 blowing

Truck listed above 5.4L V8 3V SOHC SEFI Flex Fuel. The Truck suddenly stopped running one day, when trying to restart the check engine light turned on, had a quick chime coming from the dash, and ultimately the dash went nuts and ended with the little wrench and the antitheft lights blinking. Took it in and the dealership mechanic found fuse F26 in the Battery Junction box blown (see diagram) he replaced fuse and could not get it to blow again. I drove truck home and the next day the fuse blew again. Replace but found fuses 58 in BJB blown and #6 inside truck blown. Truck has never been in an accident, never had major work done. Most recent work done was to replace rear shocks. I'm at a loss as to what to try/check. Any help would be appreciated.