aaaahhhh... another with the old "blown a fuse with a FE trick" then aye 99....
mmmmmm.... if you blew the fuse thats a good sign a direct short happened. hopefully the fuse protected the wiring from being melted and cause more shorts to the frame.
first thing i would do is undo all the wiring you did, and try the bike again. if the fuse stays in place and doesnt blow then one at a time with the bike powered off, make one connection at a time to the FE.
connect one wire & double check your work & then turn the bike on. see if that works.
if it works, goto the next wire.
keep repeating this till done.
if one wire connects up and blows then you now know what wire it is and can start investigating why it is happening