That's a very good point concerning idle output.
I do not have issues with the system as it currently operates with the 95A unit. I was hoping to upgrade to an electric w/p which initiated this inquiry.
The heater and wipers are inoperable so no worries there. Once I get this show on the road I will put my amp probe on the power wires coming from the alternator and report back. Empirical data rules the world as we have discussed many times.
As a side note, my n20 bottle heater runs on a Milwaukee M18 battery controlled by a pressure transducer so no draw there. This is one of the best electrical system upgrades I have ever done to a car with a nitrous kit.