Just replaced the 'voltage regulator' on my 1981 Evinrude 3 cylinder
70hp. I determined I had A.C. input and no D.C. output. The mechanic at
the local shop said "Let me test it with my meter, It's just 4 diodes
in a heatsink". Then he says "Yup, it's bad, the diodes are open".
So I bought a new 'Regulator'. Upon doing my own bench testing, I find
he is exactly correct, it is just 4 diodes. So how the hell is it
'Regulating'? I seem to find there is NO regulation at all, and often
find my battery voltage above 15 volts. This seems like a poor design,
and hard on batteries also.

Anyone have an insider comment? I am guessing the newer motors do
actually regulate the voltage, or do we have to buy a Japanese product
to get that feature?