Wiring help needed

I have no experience with the late fuse panels, but I'd say "usual splicing methods" as you mentioned

"What fuse?" You talking about instead of a fuse link? Problem is this. It should protect the charging wire but if you upgraded the alternator to a monster, the alternator might cause th fuse to fail. "Figure from there." Fuse links nowadays are a problem because I know of no one who markets them in an "easily defined" package