can I install navigation on 2012 xc70 ?
 

I am confused about why , or how factory sensus navgation can or not be install after production - on my 2012 xc70 , it says premium plus and platinum, has bluetooth, a video screen, and what seems to be an additional wire harness socket behind the radio unit, so anyone ever try to install either a pulled navigation radio unit loaded with sensus from a junkyard , surplus parts place , or other method ?