I have the same HU that I also bought off Crutchfield in my 04 Limited.

Crutchfield customer service was top notch. I use Android Auto and needed the parking brake wire tapped. They also helped me as the previous owner had installed a aftermarket amp and we managed to figure that out and get it all to work. I also used their "ready" harness. Steering wheel controls also work perfectly and are programmable with the HU to make them work the way I wanted. For example., I use the "Hang Up" button to pause play.

I routed the mic up the side pillar to the top corner of the windshield and the female USB into the center console (small hole drilled to feed cable).

I also hooked up a backup cam I bought on Amazon for about $20. It works perfectly, but was a bit of pain to wire to the rear tailgate. Plenty of Youtube vids on how to do it though.

Any other car I now ride in (other peoples or my own) feels inadequate without Android Auto. I love it. The ability to use Google Maps, Spotify and AudioBooks natively on the HU works for me. Being able to speak to it and ask to play a certain song, or navigate to a destination is just great.

I recommend the HU and Crutchfield unreservedly!

Things I don't like...

The warning screen - not needed.
I wish I could stream Youtube/Netflix for my daughter.
The HU is occasionally a little glitchy, and can take a while to bring up my audiobook. This may be my phone or the HU, not sure. Sometimes it's immediate, and sometimes it can take 20 seconds to play.