Remove all the fuses from the panel. Then install a fuse holder between the positive battery terminal and the feed wire to the fuse panel (probably at the battery post wire to distribution point). Then install 5A fuse and turn on key. If there any shorts it will pop the fuse. If not, you can remove the fuse holder and begin installing one fuse at a time into the fuse block, check the circuit functions, them move to the next fuse.
Nice 65 Mike. Now, I need to let you know Im not a electric kinda guy so be patient if dumb questions are submitted here.
1. If there are no fuses then what circuit am I testing when I do the 5amp inline straight to the box? ignition switch?