Oh that sucks
Itís peculiar that they use different setups (radios and cables) for the same features on these coaches. I found the audio cable behind our wardrobe drawers just by chance. It was labeled 50í so then I figured out that it went to the outside TV. They also like to use the yard sale technique when laying out and securing cables in the dash and in cabinets. That doesnít fly for me. Iím way too anal about stuff so I have to redo it. Good luck with your upgrades.