I found this thread that explained it pretty good. Scroll down watching for a longer message, thats the one that explained it.

http://www.gpona.com/forums/04-08-gr...ls-t16587.html

Pretty much as Bill said, the easiest way is to replace the column so you get the wiring. I hear you now BIll, when will quite doubting. I was not doubting, I am cheap. Actually that whats make this fun project, doing it cheap. I think for me to save the money, I need to pull the column, to get the wire and wheel. The Junkyard do not typically charge for wire if you are buying other stuff. The issue is the wire may not work on my column. Either I will drop mine or a different one at the yard, compare the differences, and make and a decision then. One other check, mine may not have the contacts to pass the signals, again will just have to compare. For the steering wheel puller, 3 prong puller? Will the one I used to pull the harmonic balancer work? I did the Harbor Freight/added Grade 8 bolts and washers.

Sounds like the DIM is compatible, but if I am looking for aftermarket radio then I may have to get a kit.

Interesting thing about the diagram above, it looks like the way the DIM knows what button is by the resistance. Everything goes through one wire. The DIM must use AtoD converter to figure out which one was pressed. I remember in a hacking forum someone used a Raspberry PI to control the radio, or sense which button (don't remember which). I am curious now what and how they did it.

Now to pull the Airbag, I have seen many different discussion. Some release the springs from the side and you can do one side at a time. Others come from the back and you have to have a special tool. This guy said if you use two stubby screwdrivers you can do one side at a time. Guess we will learn someday.