Avionics piper arrow 2

Is there anybody out there that knows of the avionics switch I’m trying to make a command in the control panel to link a switch to the avionics on the Piper 2 but nothing seems to work if there’s anybody that knows of the name of the command I already got a hold of just flight just waiting for them to respond in the meantime I wanted to see if I could find something that would work, thanks