Re: charging
I have digital and analog meters and use both. My Fluke digital was purchased to adjust voltage output on aircraft 24-volt systems so they would charge at 28-volts. The fluke was the most accurate one I could get 30 years ago and it works fine on alternator and starter generator systems. If his meter is fluctuating then there is likely something wrong.
I would polarize the field pole shoes, Insure that the cut out works, and try it again. A test of the amp meter can be done by hand cranking the engine till your sure the points are closed. If the coil is wired to the load side then switching the ignition on with points closed will show a discharge of at least 3-amps. Also insure the battery connections are good and tight.
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