Hello Lad,
While you wait on the schematic, I'm curious about what you are trying to do.
Is the idea to "just" replace the voltage control pot in the Z-controller with one that mechanically adapts to your handle? Or are you trying to study the circuit to determine which control/button wires can be extended to a custom panel that retains all control functions but with your handle?
I assume you plan to modify an existing Z-controller vs. duplicating some subset of the circuit from the ground up(?).
