The drivers side bays open
As you can see the front bay is being used to hold propane. The mid bay that I don't have open here holds the original four cylinder gasoline air compressor for the air conditioning. It's massive and I'm pretty sure it's seized up but this would make a good space to toss a new genset and air conditioner.
Next comes the rear bay that goes all the way through. Behind that are the batteries. They are quite new and are holding a charge well. I say "they" because there are two large batteries there. This is a 24 volt system with a positive ground. Strange 'eh?
The blocked off windows to the front have the refrigerator. The blocked off windows in the rear had an air conditioner.