The rio is now snug in it's sled. In the Prius. Here are a couple of pics of what I did with the sled and the harness I made. The RCA jacks could have been removed as they are for the rear channels and not needed. The sled is riveted in place. You can see the relay rtv'd to the back of the sled. This switches between the normal head unit and the rio. All of the in car controls work with the Rio! I have bass, midrange, and treble along with balance fade and volume. This really is a pretty cool car. I will post some pics of the finished install after I get the inside of the Prius cleaned out. It is still full of all the tools used to do this. I will also list there the order of panels to be removed for anyone else out there wanting to brave this.