A few questions from a new owner

[mcruff]

I would like to thank everyone for all the info that has been posted here on this forum.
I have looked but have not found the answers I need to a few questions.
I bought a 2002 Friendship 8362 in November of last year. The owner had passed away and his wife wanted it gone but knew virtually nothing about the workings of the RV.

I have 2 switches that are not labeled, 1 is in the bedroom beside the light switch (marked) and under the slide control. I can't find what it does, someone I talked to suggested night lights of some kind, haven't found any but a bulb could be missing or burnt out.
The 2nd switch is in the hallway with the light switch to the main living area and the front slide control, again not marked. Any ideas on these switches.

Also how is the engine block heater activated, is there a breaker or switch I haven't found?

Last question, my outsides porch light by the door, I haven't found a switch. Then again it could have a bad bulb. I have not had the cover off of this one.

Thanks again for any help!!

Mike