My exterior entertainment center DVD/Radio (BOSS BV622) suddenly stopped working in my 2016 Excursion 35E. TV still works fine but the entertainment unit refused to power up.  According to BOSS there must be 12v power on both the unit’s Battery line and the ACC line that plug into the back of the unit. I have no power on the ACC  line.  BOSS Says that most RV manufacturer cross feed the ACC line with battery power so the unit runs when parked but typically the ACC line is also switched to allow the owner to kill the power remotely in case unit is left on after packing up and closing the exterior hatch.

Fleetwood wiring diagrams are fairly sparse when it comes to tracing wires. I’m looking for someone else’s experience tracing the 12v ACC source and/or troubleshooting this. All fuses are good. Its likely a disconnect somewhere or there is a switch I don’t know about. Eventually I will likely just give up and cross connect the Battery and ACC lines but I’m relatively certain that’s not how it was designed.