I built my big foamie for camping at state parks with no connections.
The only lights are for towing.
We have battery powered fans, and a couple jump start packs from Harbor freight for charging the phones overnight.
The start packs have built in lights in case we need them.
We each have swiveling tap lights, powered by batteries, mounted on the ceiling over each door.
Around the camp we use headlamps, and have a propane lantern for cooking and eating lighting.
This year we will be at a campground with power, I'll put a hole for the cord through the floor, and have a power strip