Replacing external Alternator with internal Alternator questions

Have you upgraded the wiring IE done the MAD mod and bypassed the ammeter? If they are both "one wire" they you should have no regulator wires?? to deal with

I don't understand what you are saying, you say "both are one wire hook up" but you are talking about a regulator.

If the old one IS external regulator, you basically just "safe" those wires off. do whatever you want cut them, tape them, etc.

Do NOT put a one wire, and especially a "big amp" alternator on "stock" wiring harnesses.