Help with 1996 Jayco Designer

thank you all so much. New tires are coming this weekend, thought the tongue was where the battery should be but it is missing...glad it shouldn't be difficult to replace. glad to know also that these travel bars should also be easy to replace if not found. We have been staying there every other weekend for the last couple months so everything is sound except for a few small things, a couple wall outlets don't work and dirt dobbers set up house in the vent-a-hood...cleaned it out but it no longer works...light does, fan doesn't. the vent fan in the bathroom no longer works as well.
lol there is one more mystery...there is some handle on the ceiling near the door that says something about pointing north???