With headlights and all accessories on, I get 13.6V and 56A. Increasing throttle doesn't impact the numbers much. I have a new voltage regulator w/ brushes on the way. My question is about the diodes. An A/C voltage test produces this:

38V
20V
11V
6V
0V

The numbers repeat as a cycle. My book mentions a number above 0.5V indicates bad diodes. But it does not mention cycling numbers. Does 0.5V apply to the highest number?