Can someone help me design a system? (van rv conversion)

[volcomsurfer]

So I'm converting an 2006 ford e350 into a camper style van. I'm laying out the electronic diagram right now and need some advice on if this head unit exists.

basic diagram.

So I understand my wish list might not be completely feasible and I'm not looking to have tons of electronics to drain the battery bank. I'm trying to run everything through one head unit (i.e. not looking for 2 screens, not looking for a separate receiver) if possible. Priority list would look like functionality>price>quality.

What it needs to support:

-At least 2 cameras, preferably 3

-Sat radio

-GPS

-6 speakers

Desired functions:

-2 zones. I'd like to isolate the front two speakers and the back four. I'd also like to be able to hook up the tv output to the back four speakers preferably through the head unit interface; but if I have to run an aux cord the whole way and keep it near the input on the head unit I'll settle.

-DVR capability for the cameras

-display of the cameras (to use as a backup camera)

I've seen 3 and 4 camera kits with displays and DVR, but I'd rather run everything through one head unit. If I have to I'll take 2 screens over a receiver to run the 2 zones.

Any advice or suggestions would be greatly appreciated. Nothing is bought yet so the speakers, cameras, and tv are all up in the air. Thanks.

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[Nova5]

Zone isolation is the easiest. A switch in the rear can trigger a set of relays which control whether the HU up front or the audio source in the rear outputs through them.

You can use a pair of 3way switches if you want to be able to control it from both the front and the rear. The 3way switches work in tandem with each other (might even have some in your home, can you control one light from two locations?).

 

[volcomsurfer]

Sweet yeah I was thinking about a small switch after I made the post.

I think that this head unit will be everything I need. It's a bit pricey, but seems to have all the features I'm looking for.

Alpine Electronics of America, Inc.