Toyota NAV complete - Navigation GPS for 2010+ Prius Gen 3 I think these are all the parts you need to retrofit an OEM NAV unit to your Prius 3,4 or 5. Bought all this stuff, some new and some used to install in my Prius 2, but the Prius 2 doesn't have the factory harness built in. My loss is your gain.
Looks pretty complete, I was a little confused about some of the items as my 2010 IV already has xm radio, is the xm receiver and antenna different than what is already in place?