Can't help you but the television remote also turns the radio on.
The television is a stand alone Axess 12 v/120 v bought after the trailer
When we change channels the radio changes stations.
Would like to shoot the radio
2012 Honda Ridgeline
2016 195 RB.. 10,500 miles under tires as of today.
Been down many a dirt road in the west. We go where not too many rv'ers go.