Here is a diagram to convert the external regulator to the newer internal regulator. It is only necessary to extend the brown exciter wire to the no.1 terminal on the alternator by jumping it to the white wire in the stock harness, and jumping the red wire to the blue wire to no.2 terminal on the alternator. It doesn't show it but the red wire junction circled in the diagram is a direct feed from the battery positive.
The one-wire does not use anything but the larger red wire on the back of the alternator.
