Electrolysis in aluminum radiator - Help

[cad]

We are going to get back on it tonight. I will post back on findings and the solution.
Very possible that the mini powermaster alternator, which was new this year, is bad.
I will also swap in a spare Red Top battery.... yes, it has voltage while the battery is completely removed from the truck.
I am definitely going to be flushing the system...I have to pull the radiator to get all of the water out, as the drain and lower hose are not in the very bottom (Griffin radiator). Ive got petcocks in the block, so that is the easy part.

Thanks,
Clark