Precision Circuits Tech replies:
"You are correct about the orange wire. It should be connected to Ignition just as you describe. Without the Ignition signal, you will have exactly the problem you describe, the House battery will not charge."
Therefore that is confirmed. I need to find another source of switched ignition or find the issue with the chassis connection.
Second, but more important, is what happens when jumpering chassis voltage to J12.
The tech hasn't replied on that one, but kudos to them for replying this late in the day!
