If it's like my 2015 30DS press the menu button on the left side of the Pioneer, then press the rear view camera icon (lower right area) to the on position. For the logo light under the TV there is a switch on the underside of the cabinet. It's under the TV next to the 110V outlet. The logo light is just a nice night light.
2015 FR3 30DS
Towing 2016 Chevy Sonic LT