Wait, why tell me this?
View attachment 1434
This is the diagram I started with when wiring The Lady (I modified the grounds but that's irrelevant), why you felt it necessary to explain a system I used is beyond me.
My point was that Gibbo has the option in the PCB of the HP LP to switch all kinds of wiring options. 50s included.
Hmmm....it was just to show the 50's wiring everyone was discussing....if you had already posted this, I didn't see it....