Hi Frank,
I explored and went to an alternator out of frustration and a growing awareness of my Healey’s electrical circuit power demands.
I first experienced a low voltage output and found the regulator was at fault. Replacing the regulator, I, again, began to experience low voltage output a month after. Finally, after failing at trying to manually reset the regulator, I tried an electronic substitute which worked fine for about 9 months and then failed with low voltage. During all this time, the generator was checked out by at least 5 professionals.
I agree with your feeling that most distributors source replacement LBC components from a limited number of manufacturers and, chances are, you will acquire the same manufacturers component from multiple sources. My desire to break this pattern, and my growing knowledge of my Healey’s circuit power demands and risk, moved me to replace my generator with an alternator equipped with an internal regulator, install in-line fuses on all critical circuits, and apply relays to reduce the level of power passing through 45 year old components.
Hope this helps,
Ray (64BJ8P1)