squareback alternator wiring in pre 70 car issue

Brian showed two schematics, the left one is for early regulator. If you wired for one on right, it will not work with early regulator. No need buy newer style regulator unless you want to wire to circuit on right.

Fix the wiring back to what it was when one field terminal grounded. Then with engine running, provided voltage measurements for blue wire at regulator, and battery.