Looking for help. Does anyone know why I wouldn't have any comm indications on the G3X screen? I dont even have options for a radio in the setup menu. There are no radio frequencies in the upper part of the display or a way to manually tune in a frequency. The only thing I am able to do at this point is change the stand by frequency on the radio through the G3X display on a page that has airport frequencies. I am currently still wiring the aircraft but the CAN Bus is wired along with some Rs 232 wires and I still don't have radio functionality with the G3X. I have a G3X and Garmin GTR 200 radio as a setup. Any and all help is appreciated.

Jeremy