The camper is very basic. There is not a house battery, nor a place to put one that I have seen. No water pump, the sink is a simple vacuum created from pumping the top up and down. There is not a fridge, there used to be I believe, since there is a hole that is roughly the size of a small fridge that has been turned into a pantry. I'm not worried about the fridge at this time, later I will either find a fridge that will run on propane or design the electrical in a way that allows for a small house fridge to just be plugged into one of the outlets. I can get my hands on a solar panel, its large (almost the size of the roof), but does not have any of the other components needed to hook into the system. The entire camper is sitting on a metal frame and I have no issues fabricating, so building in a location for batteries would be simple enough if it comes to that.
I'll be going into the mountains with about three other truck campers, so getting stranded isn't really a concern, however I don't want to be "that guy" that needs to be jumped all the time. Basically just need the furnace between the hours of 10pm-7am.
The LED's are a good suggestion, I'll look into those for sure.
There is a large, newer, 5th wheel being parted out near me that still has many major components left. Can any of this be scavenged to work, or should I look into mounting and using the solar panel with a battery bank, or .....?