Euro Alfetta GTV
First start after winter - started on the 2nd try, generator light went out for 3-4 seconds, then came back on and stayed on.
It's fully illuminated, not just slightly.
12.4V engine off and 12.4V engine on, up to about 4k.
Swapped the regulator, same thing.
That leaves the alternator right?
Alternator is a Magneti Marelli, probably orig.
Alternator belt looks Ok. I changed it about 3 years ago. At that time the generator light was faintly illuminated,
like you might get when a bunch of electrical things are on. Changing the belt cured it.