225 charging problem

67Dart273 said

Sorry. Disconnect the green field wire either from the alternator or the VR, and jumper 12V to the alternator field terminal if you disconnected the green at the alternator, or jumper 12V to the green field wire at the VR if you left the other end connected to the alternator.

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I disconnected the field wire at the regulator, and applied 12V to it (so I could test the wiring at the same time as testing the alternator). The ammeter, typically at dead center, pegged! The voltage at the battery approached 16V so I killed the engine. Put it back together, started up and same behavior as before - needle at dead center.

The battery is new. I take it, the regulator is the likely culprit?

Dan