Surround Sound Problems

[aging rocker]

We are still testing our new (to us) 2006 Crescendo and one thing that keeps us perplexed is our surround sound system. The surround works great when played through the in-dash radio (an after market Pioneer DNX7120), however, I can't get the television sound to play through these speakers. I read somewhere about a radio/TV switch but I can't find one. As far as I can tell, everything is plugged in correctly. I removed the television and checked the wiring up to where it entered the ceiling. and everything seemed fine.

I have attached photos of the inside of the entertainment cabinet. Hopefully, someone can point out what I'm missing.

Thank you

[okcnewbie]

This was all I could find. Hopefully you just need to find the switch.

http://www.irv2.com/forums/f53/surround-sound-393284.html

[aging rocker]

That's where I read about the "radio/TV" switch. Still looking.