newbie questions - 5er front BR switch / speakers

[chromefinder]

just got a new to me 5er - 07 Montana Mountaineer 342PHT

A few questions that someone might be able to help me with:

1) In the front master BR there is a on/off switch next to the left of front closet. I can't seem to figure out what its for, anyone know?

2) How do you make the front master BR ceiling speakers work?
3) How do you make the Rear Ceiling speakers in the Kit/dinette work?

Living room TV speakers work and the external 3 speakers plus sub works fine.

thanks in advance for any guidance

[okierver]

on our jensen radio/dvd player in our montana it has a a.b.c button on the radio a. is bedroom, b is living room and c is outside speakers.

[DQDick]

If someone replaced the original receiver that could be your problem.

[chromefinder]

Its the original Living room RCA TV and (i don't know brand) DVD player. The DVD player looks to have everything connected.

This is the original set up from the factory - no mods were done.

[Michael Ryan]

I have the same unit that you do. The switch in the master bedroom turns your bedroom speakers on and off. I can't help you with the kitchen speakers, all I know is that mine work.