Factory ammeter

GREAT info! I am in the process of rewiring the harness in the car (1969 Dart) I found many wires melted together and even the cursed aluminum foil wrapped around one of the fuses. The questions I have are three fold.
(1) if the ammeter should be bypassed, are you suggesting to connect the two with a connector?
(2) if so, wouldn't that negate the alt feed to the black wire?
(3) I put a 440 in the Dart and the alternator is from 1975, so I am thinking it is higher output than stock '69. Issues and concerns?
Thanks, FABO gurus.