My analog low range is 10v, then 50. My digital low range is 20v.
I am clear on the fuse block and the 2 fuses but I am not clear what you mean by the connection between the ALT and AM1
Do you mean the metal band (conductor?) on the side that looks sort of like this? (this pic is from an earlier model and is not identical to mine) (EDIT:I will assume that's not what you mean, because on mine there is a lead directly from the + terminal to that metal band)
But this is probably a good time to mention that (courtesy of previous owner) the fuse block is not mounted normally, it was just sort of tied with wire to the battery hold down and another point on body. Not sure that would make a difference but thought I better mention it
Also I realize now I should really disconnect the plugs and inspect all the lower terminals closely, which I did not do before when I inspected the fuse block.