The second is th install of a propane
detector - I highly recommend it for your well being and safety. I found a good place to mount it is to the left of the port-potty door under the front bunk. I still have plenty of room to open the 'fridge door, and it was easy to snake the wires through the cabinet to the downstream side of the converter, thus insuring power whether hooked up to a land-line or on battery
power. It's good peace of mind.