Forgot to add that the Progressive Dynamics converter is a multi-stage unit that charges at a higher voltage when the batteries are low, and as they peak the converter drops back to a more reasonable voltage for topping the batteries. It also has a desulfator mode that happens only ever 21 hrs or something like that. It has an indicator LED that flashes to show what mode it is in, and a push button to force it into certain modes, and the new 12v fuse panel has two more fuses, plus fuses for protection from reverse current, plus warning LEDs to show when a fuse is blown.
Charles