I have a 1997 36' Dolphin M.H.
As to the entrance step, as you are entering the M.H. just up to the left on the outside of the sink their are two placks one is for the Elec. to the inside of the M.H. the other is a row of switches.
First is for the step the second is for the outdoor porch light, third is a over head light between the counter and the dinnet set.
Then the other switch controals the Batterys for the lights and all the other things which is red when it's on.
When the door is close and you press the step button.the step will go out and stay out until you turn the key to start the engine or press the step switch then it will retrack.
Note: When you are park adjacent to a curb (not all curbs are 8" high) some are higher so you do not want to park to close to the curb because if your step hits the curb it will break the arm that moves it out and in.
Just a thought.