Should everything be off while driving to a destination about 3 hours away? Specifically the on board battery and propane. Is it ok to have the propane on and running the fridge while driving? Is it ok to have the battery on while driving or should it always be off? Will it be charged from my own vehicle automatically even while off? what about the switch inside the cabin under the vent? There's a switch there where if it is in the middle position it is off and pressed one way activates the battery, what does the other one activate?? Should that be in a specific position while driving? What about having the outside battery switch off and the inside battery switch in the position that activates battery power? Would that be ok for driving?