I want to upgrade to a new DVD player (aftermarket) with 7" screen, 2 additional ones for the kids in the back....rear view camera....

My big problem is the issue with the interface for chimes, RAP...and what ever more is now controlled by the original unit.

I saw already the posts with upgrading speakers and sub...great info!

Can anybody tell me about his experience...some recommendations?
SPOSCHE is a brand what has a module, but the references are not the best...quality...sound quality...

It seems also that it depends on what year the car is and so on. My is a 2007 with the monsoon speakers.

Appreciate any feedback!