We have provided custom keyboard commands assignable from the PMDG
menu that will pop up the 2D panel elements like the FCP, MCDU, radios
etc. These commands work in both the 2D panel and in the VC.
If you double-click a variable lighting dial in either direction it
will move between full brightness and off instantly.
The cabin lights at night are an independent function from the normal
FS lighting controls. Simply set a keypress for them in the PMDG
Options menu and you'll be able to turn them on and off.