I ordered the dimmer knob kit from stein to control all the interior lighting. I know that I can also do this via the G3X, but for something like this, I just like teh convenience of actual knobs.

The anti-rotation feature on these rotary potentiometers is a little different than most; instead of a washer/keyway setup like a breaker or toggle switch, it's two little tabs at 180* from each other built into the housing of the switch itself. To accommodate this, I fabricated a .032 strap that gets sandwiched between the switches and the back side of the panel. The tabs straddle this strap top and bottom. Much simpler than trying to match drill a plate for the tabs or put dimples in the back of the installed panel.