Pre 1970 vs. Post 1970 Alternators / Systems -- SOLVED IT - See Post # 12

The problem with the above post is VR706 is the electronic version of the early style regulator, and suggested wiring will not work for that.

To make it work, the last part about connecting the second field wire to blue wire, instead should connect to ground at alternator. Or more simply, leave all wiring for the early system, and connect the second field terminal to ground.

The other option is to use late model regulator and associated wiring with mating connector, per above post.