I thought the voltage drop would be fixed through regulator. How would I find the voltage drop? Other things I never mentioned that maybe relevant. I converted to mopar electronic ignition, and soon to be switching to hei. And new standard US Ignition switch.
Read top of post #7, if the ignition switch is good, then bulkhead connections are likey problem. You can measure the drop with a single measurement, battery plus to IGN terminal on regulator, engine running.