OK, I got the fuse block repaired. The hot wire I pulled through straight to the horn relay, eliminating my previous splice, with the watertight butt splice. The ground wire I just used some 10awg quick connects. The lock tabs broke off the connector plugs, so I'll have to keep an eye on them. I may just smear the plug body flanges with silicone to glue them in. I also bolted the ammeter ring terminals together, and wrapped with black tape. Thus the alternator gauge is out of business.