The rotary selector has 12 numbered outer tabs and 3 center tabs (A, B, C).
In the wiring directions, there are two rotary selector drawings - one gets the dc-in connection to a center tab w/ 3 outer tabs wired together going to 'V".
The other shows the selector base going to "S" while the outer tabs go to "Off", L, M, N.
Which 3 tabs get wired together and connect to "V"?
Do the dc-in and "S" conections go to any particular two of the three center tabs.
And do all the ground connections throughout the box get connected to any central grounding spot on the main PCB or dc-in?