Our Class A has a small panel by the entry door, in the side of the sink cabinet down at carpet level at the top of the entry steps. It has three unlabelled rocker switches. I eventually figured them out. One is for the exterior lighting under the awning and on the driver's side towards the rear, the middle one is for night lights which are on several of the cabinets very close to the floor.
The third one controls the entry steps. I think the circuit design was changed a few years back, but I can set the switch one way with the steps either in or out and they don't move when the door is opened and closed (except when I turn the ignition key). In the other position, the steps follow door movement every time. It's useful for leaving the steps down when were at a CG, and can save dinging a closely parked vehicle when you open the door (useful on the ferry).
Frank and Eileen
No longer RVers or FR owners