High Charging Rate. Found Voltage Drop Need Guidance Please

Yes. I figured the same as Kit did.
A 0.8 Volt drop with just ignition and rotor drawing power is a lot.

There could be resistance in several locations or just one since voltage was high with engine running.

@Mattax

Like many of us vehicle electricity is not a possessed skill set of mine. How long can I run the engine with battery charging unregulated? Reason I am asking is that I am currently running a MoPar Blue 3690732 regulator. When hooked up the ignition connection is closed and can't be probed. In order to do some of your recommended tests I would have to disconnect the regulator to access the ignition input. Your thoughts?

I have ordered a stock (solid state) regulator with an open spade type ignition connection. I should have it in a few days. Perhaps I should just wait and get it installed before carrying on. Assuming running unregulated is a problem. Thanks again!