High volts
...............3A. With key on, engine off voltage loss measured at <TADA!!> 1.1V when probed between (+) battery terminal and IGN voltage measured 1" from VR connector.................
So, I might be going after an ignition switch.
THIS RIGHT HERE tells the story.
Your trouble is somewhere in the circuit path I mentioned
Get yourself a diagram and go through this path. Measure the "easy to get to" points first, then get to whatever you can in between
The ignition switch/ switch connector is one place you can access
The interior side of the bulkhead connector
You say the "ammeter was bypassed" but not knowing how you did this, IE if you simply bolted the ammeter wires together, the problem could STILL be the wire ends themselves, or the "in harness" splice
"Running voltage" and ohmeter checks are meaningless.
What you want is the circuit under load, engine not running, key in "run." This causes the regulator/ alternator field to draw current and put a load on the circuit path. As you check the path from battery, through the firewall, switch, back out, the drop "criminal" will show up.
