Let there be light.
I’m a sailor. Having spent a lot of time anchored in out of the way places I am familiar with rationing water and electricity. If you use your 12volt cabin lights a lot, you have to recharge the batteries. On the boat, that meant running the engine long enough to charge the batteries. This was ok because it also chilled the zero degree holding plated in the freezer. In cooler weather I burned oil lamps in the cabin for light to save battery (and make heat).
I figure that traveling in the T.O.A.D. isn’t much different. Oh sure, we do have a generator if we choose to run it. And the refrigerator will operate using 12v, 110v or propane so it doesn’t need to deplete the house batteries. But lighting in the coach still has the same issues. High battery draw and heat. Those automotive type bulbs can really put out some BTUs.
Here is my solution: 12v LED bulbs. Yesterday I swapped out several of the old incandescent bulbs with LEDs. They draw only a 10th of the power and are oh so bright and white. I mean white as in a cooler white similar to the old fluorescent tubes. Not warm like the original bulbs. Bright. Very bright. I put one in the lamp over the easy chair where I expect reading a book in the evening will be easy on the eyes.
Have a merry Christmas, Y’all.