Magnum,
Did you figure this one out? I seem to be having the same issue with the new mini starter on my Challenger. Battery draining after a couple days, as well as not fully charging while running. I've found voltage on the line that runs to the solenoid on my starter, which when unplugged from the starter relay, is shorted to ground at the starter. My friend measured his starter solenoid post and found 6 ohms through the windings to ground. Mine is a straight short.

What should the that reading be? Anyone else have any ideass?

Thanks,
Chris