[murf]

Hello and happy new year.
Have a question concerning the connections on the volume switch.
The 3 lugs on the perimeter are what i am wondering about.
I see one goes to ground, center lug has a cap attached, but the third one is disconnected.
Have looked at the schematic, and am not clear if that goes to the 6SQ7 tube socket or to the tone control switch?
As you all know, my schematics reading skills are lacking.
Getting better, but still unsure of myself at times.
Can anyone take a look and straighten me out?
Looks like lead V to one of the center lugs on the tone control switch?
That would be the audio input lug. To 6SQ7 tube?
Thanks guys,
Murf

update by moderator: LINK TO SCHEMATIC