On our '02, there are three switches on a panel, a singlepanel with a switch for battery store/use and the CO/propane detector panel.
The three unmarked rocker switches are for the floor-level night lights, the outside night lights and the steps. The step swich can be confusing. When you switch it "off" it holds the steps in the position (up or down) at the time you switched it. If the steps re down, and you turn the ignition on, it will override that rocker switch and retract them, but then they stay up unless you flip the switch the other way.
We use this switch when we're docked so that the steps aren't continually opening and closing with the screen door.
I believe the battery "use/store" switch operated a house battery disconnect relay. I usually have our rig plugged into shore power, even when stored at home, so I leave that one in "use".
Frank and Eileen
No longer RVers or FR owners