The interior lights should be 12v DC power and when plugged into shore or your house (120v AC) the inverter in your camper will automatically power them. 
You just need to verify:
1) does the receptacle at the pole have power?
2) is the camper plugged in?
3) are the breakers in the camper turned on? 

When you are on battery, the lights should work in the camper but not the receptacles since they are only 120v AC.  When plugged into 120v, they will all work. FYI - The lights are often brighter when using 120v.