Cx-7 Rear view camera install

[mucyx2007]

Hi,

I have just purchased an GPS unit with rear view camera for my 2007 cx7, just wonder if there is any installation guide for me to start with.
Especially the part getting the wire through for back camera and connect.

thanks in advance

 

[mucyx2007]

any advise?
I have found instruction for cx 9, is there one for cx 7?

thanks