You might check the small ground wire
that goes to the body, as well as the small
Pos wire that feeds the 60A fuse you blew,
that's about all I can think of, might have
blown one of those like a fusable link, you
can't see when they are blown, but they still
don't work.
If you have an Ohm Meter, disconect the
battery and see if there is continuity between
the big battery terminal and the end of the
small one, if it shows open circuit, replace
the battery cables.
Good Luck
Wild