Alternator and Voltage Regulator Questions

If you don't want the ammeter, just bypass it. Simplest way is to put both ring terminals onto one of the ammeter studs. (Just make sure the stud isn't loose.)
MAD's loop puts all of the current to run the car through the 16 gage fusible link. There's no reason to do that.

Doing this does NOTHING to help the weak wiring and weak bulkhead connector terminals. And that is NOT what the MAD modification does.

The MAD mod electrically makes the original RED feed wire to the ammeter and the original BLACK ammeter/ alternator wire IN PARALLEL to feed the interior. That ALSO removes CHARGING CURRENT from those two conductors, lessening the load on them

If you run a big wire direct from battery to alternator that will help BUT it defeats the fuse link and leaves some of that big wiring UNPROTECTED without an additional breaker/ fuse /link