CV-580 panel and exterior night lighting

Hi, I have the Great Lakes, Air Cathams and Qantas CV-580. I use the Great Lakes CV-580 panel as it is excellent, however I cannot work out how to select COM2 or NAV2 to listen to - any ideas? Clicking on the switch on the radio panel seems to do nothing.Only the Cathams CV-580 has night lighting, how easy would it be to use those night textures for the other two CV-580 (sorry - I know nothing about painting)?HOpe someone can help - these are great aircraft!