71 Dart overcharging

Good info. I will load test the battery tomorrow, but I think it's O.K.. The connections are very good. That is always my #1 test.
Cables I believe are 'O' (read huge)
The other tests are interesting.
VR is working, with lights on, heater etc. follows the 15.5 charging
I am going to guess, having the battery in the trunk, is causing a voltage drop to the VR (via ign. switch). I did see that kind of drop at the VR. Never heard that one before,cleaver. I have tons of old Mopar repair books, must have missed that one.
A relay, ignition activated, and a heavy wire from the batt. or batt. cable to the VR would solve that issue, if that turns out to be it. Its all right there together.Simple
Stay tuned!
Thanks,You guys got me thinking.
PS. rustyratrod, love those scriptures