Do your lights inside the trailer work when you are plugged in to 110 vac?
The radio, microwave etc will not work unless you are plugged into 110vac.
The lights and jack operate on 12vdc (the battery). Check for a disconnect switch close to the battery, it could be turn off.
You will have no charging of the battery if the discionnect is switch off.
2007 Surveyor SV230 - 200 Watts Solar/MPPT Controller - 230 AH Battery Bank - 600 watt PSW Inverter - (2) 2000 watt Inverter Generators - LED Lighting - Boon Docking 99% of the time.
2009 F150 - 5.4 Litre - 6 speed - Tow Package