Objective was not to just go willy-nilly and change out VRs, gens, etc; but rather to test to see what works and what doesn't.
1 & 2 were results of questions relating to a 650 Ford. My understanding was that there is a measurable reading from ARM to BAT IF the VR is good - if not, then replace. Further, there should not be a measurable reading between ARM and FLD is VR is good - thus replace if get a reading.
In fact, those instructions seemed to have been reliable regarding an 8N and a 650. But, will verify or correct notes at the proper time.
But, no one should take my word for anything. I'm the trainee/learner, not the wizard. Pleased that lots of experts respond to posts such as mine - and try to get me on the "straight and narrow".