The original wiring ran from the generator (not alternator) to the ARM terminal on the regulator mounted on the firewall. Then another wire went from the regulator BAT terminal to the ammeter. If you're running an alternator with an original wire harness, splice the ARM and BAT wires together at the regulator area (solder the connection) and insulate it. Eliminate the FLD wire from the regulator to the generator or incorporate it into the idiot light/excitation circuit of the alternator. Trying to use an original equipment wiring diagram with an alternator is about as confusing as comparing apples to pomegranates!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!