Take the TO-30 12 volt diagram from FENA.
Eliminate the generator and regulator and the 2 wires between generator and regulator.
This leaves the B (Bat) and L (switch Load) wires that were connected to regulator.
B wire goes to big output stud on one wire alternator.
L can either connect with B wire to back of alternator or replace with wire from alternator side of ammeter to switch.
Solenoid wire is a separate issue as changing from generator to alternator should have no effect on starter/cranking circuit.