Alternator Into Generator Wiring Diagram. Its supposed to assist all the typical user in developing a suitable method. Physically mount the alternator, and connect the same two wires which originally serviced the generator.
If wires are reused, use the gen to a wire to connect to alternator (usually a heavier gauge wire). This diagram was designed for 12 volt systems, but can also be used for 6 volt systems. As you can see, the bat post of the regulator is being used as a junction point for the battery connection to the new single wire alternator.