I'm betting
flasher relay problems it it lights but doesn't flash. Do a search, the topic has been covered extremely well in the past.
I'm guessing that you're referring to the 30 main fuse, which is a metal strip bolted in on each end? If the connector still works, and can be opened, I wouldn't bother, tape it up. Otherwise your options are probably either to put individual connectors one each wire (Radio Shack has this stuff, as should an indy bike shop) or just solder oll the connections and hope components never need removal or testing.