[tentcamper]

I assume when you say add a CD/tuner, you will be adding a radio above the fridge? When the radio is turned off it still draws power save the presets. The radio antenna is powered all the time even without a radio installed.

When I installed my radio I installed a power switch and powered the radio and antenna through the switch to limit the battery drain. Only downside is I lose my presets, but since we are moving around with the trailer it has not been a concern.