Fusing between alternator and battery.

I am not sure, but it sounds like you have run twin 10 gauge wires from the battery to the alternator. I would run [piggyback] one wire of the same size as the car has now [#10 or #12] from the battery to the alternator stud. Add a fuse or fusible link to it. Leave the rest of the wiring alone. Your ammeter should read one half of the current going into or out of the battery. I don't know how this would affect the voltage regulator. ------ 67 Dart or Mattox could chime in.