wiring a voltage regulator

LOL. When I said second I meant "other than green" as you'd mentioned you'd run the green wire. So looking at the diagrams above, you need

1-either one of the field terminals (green) run to regulator

2-The remaining field run to switched 12V

Does not matter which is which HOWEVER be CERTAIN to check that NEITHER field terminal goes to ground

There were two members here recently who got "parts store rebuilds" both of which incorrectly had a grounded field. This can occur for several reasons:

One field terminal can be damaged or missing the insulating washer under the screw, grounding the field

Or the alternator can be a "rebuilders nightmare" which is an early (69) which was drilled by the rebuilder to accept an aftermarket insulated brush. If this is improperly installed, OR the original grounded brush is ALSO installed the field, again, will be grounded.

If you are unlucky enough to hook your blue switched ignition to that wire, bad things happen.

Otherwise, the damn thing simply charges "full tilt."