Standard alternator has in internal regulator. I'd disconnect from shore
power and then run a load on the batteries - frig, 12 volt motor etc.
Check voltage. Start engine, look for a jump in voltage.
Or I'd just pull the alternator and take it to be tested. Non OEM
alternators are cheap.
Joel
While out for a lovely day sailing Saturday we noted that the electric head was
not draining properly. When I checked it seems like the motor was straining
and may need replacement. Afterward when motoring back to our club we noted
some issues with wind instrument and then chart plotter. Chec
