1Up Arcade Encoder Decision Dilemma

[Vocalitus]

Hi,

I have a 1UP MK and I want to have an encoder selector.  One for PC the other for Xbox.  I was looking at the volume selector on the 1Up and I do not know which USB line to splice into. The 5v line going to either controller board, or the data line.  I know I am answering my own question, but if I leave the 5v still plugged into both encoders will the controls confuse either board? If I go the data option will the 5v backfeed into both encoders causing the same problem? One side of the MK is traditional buttons, the other lighted.  I bought the lighted buttons already and how odd can it look?  Either board (LED Zero Delay + atmega32u2) doesn't have enough inputs for the entire control panel on their own and I looked at the Xarcade controller board as an option, which will need a more elaborate switching method.

I opted to get the wiring harness from the X arcade website.  The wiring harness matches the connectors for the 1up Joysticks and allowing for easier connections for traditional buttons.

Would the volume control option be feasible in this scenario?

[Vocalitus]

Update:

I could not use the volume selector and had to buy a physical switch box.  Cannot risk damaging everything.

There was a cool 1 Up mod so you can reuse the power and volume controls on a Pi.