1990 Ford Crown Victoria Question: died at drive thru. no electrical power to restart, car completly dead

car died at drive thru window, all electrical components are dead(i.e. headlights, interior lights, sterio, starter,ect.) hooked a new battery up, same results, nothing electrical will work. could it be a fuseable link or a main fuse? where is the fuseable link located? Any ideas guys? its been running fine until last night at the drive thru.