nate.the.great

So, I just finished my AppRadio install using the PAC RP4-MZ11, a path less taken around here. I know the preferred harness is the AXXESS.

First, the harness...
Pac-Audio.com Product Details | iPod Integration for your car and More by Pac-Audio - Connecting you to the future

This is a great harness. Why? It requires no cutting into your stock harness to get your steering wheel controls working.

If you're installing a stereo without a touchscreen / apps, then there is no need for taps at all. All you will do is connect your headunit harness to the PAC harness, and you'll be all done.

If you're installing a stereo with a touchscreen, but no navigation, you'll have to tap into your parking brake line. (or install a switch)

If you're installing a unit with navigation you'll have to take apart most of the center dash in order to place your GPS antenna in front of your center speaker. Sorry, I don't know where to tap the Vehicle Speed Sensor (VSS), mine didn't have that wire. It's also not required.

If you're installing a backup camera, you'll have to run wire from the back of your car to the front. I chose to follow the SIRIUS route detailed below. You'll have to run two wires, one for the reverse signal, and one for the camera video out. Also, feel free to tap into your reverse light for the reverse signal and as a power source for your rear view camera. It work like a charm for me.
http:\\ep.yimg.com/ty/cdn/yhst-24809172479195/rx8sat2010.pdf

If you have a BOSE stereo, make sure to use the RCA pre-outs instead of the wires in the headunit harness. If you use the wires in the headunit harness, you will effectively double amp your source. This leads to lots of static at low volumes and a very wonky/loud stereo. Another workaround is to use a scosche line level adjustment, but what a pain. Just cut up some RCAs, and wire them to the vehicle harness.

If you have SIRIUS, I feel bad for you son, you got 99 problems, and they are all related to removing the SIRIUS system. Removing that system was the most annoying thing ever. It is routed from the trunk all the way to the front with half a million zip ties, and you'll have to disassemble half of your car to get to all of them. No joke, the wiring was something like 20 feet long.

The steering wheel controls were a little finicky. You must reprogram them to control your headunit properly. Mine kept thinking that I was pressing the phone menu when I was touching anything. Once I completed the headunit specific programming, it was fine.

The worst part was the removal of the SIRIUS add on, if you don't have that, be thankful.

muythaibxr

Did the stock info screen work?