National Air Bag question

I have a National Tropical and without looking at the dash I can't tell you what everything is for. I can tell you I don't have any switches that don't control something. A possibility is I have two separate toggle switches that control the auto visors on the passenger and drivers side and a toggle switch for the fans above the windshield. I also have a toggle switch for a reading lamp above the drivers seat. So if your motorhome doesn't have any of those items, that may be what the switches were intended for. They are going to install the switch whether you have the item installed or not. I don't recall any switches labeled as "Aux" so my guess is they are just extra for things you may want to add.