We don’t know what this switch does.

[dkoldman]

You guys are hilarious , I wonder what it is like for an OP trying to solve a problem with all of the laughs. I am surprised no one mentioned the obvious? It is a secret wife only need to know switch that will eject the driver's seat OP may not have noticed because driver must be seated in order for it to work

To OP;

If it were me, I would stay in the kitchen and make a note of everything that can be turned on / of. Then go find the switch to turn it on/off. Eventually you will find something that you can't find the switch to.

Here are my guesses in order

1. Water pump
2. Porch light (check outside for lights including back of coach)
3. Awning light (may be rolled up and you can't see now)
4. Courtesy light around the floor / inside steps to door (bulb may be blown)
5. Secret wife switch (Please do not tell the Dear Wives that I snitched the secret)