First try not to make wiring into a big thing. it's much much easier than rebuilding a motor and anybody can do the wiring at their own house not have to send things out to an expensive machine shop because we don't have tooling...
Simply follow the wire all the way back from where the fuses blowing to where the next connection is... I'm already suspicious if someone added a fuse to this from what I gather to something that already had a fusible link. Probably melting and burning out the fusible link and making a mess... Try not to throw another Band-Aid on it like the previous owner...
