Anybody know where the wire's for the bluetooth control buttons on the steering wheel are going to (2010 i Touring)?

I figured out where the audio controls are going to but can't find where they are. Also not sure whether they are just simple push switches (on - (off)) or if they are part of a clock spring. With the stock radio disconnected, bluetooth functions cease which leads me to believe that they are going to the radio through one of the plugs. I know it's not going to plug 1 based on the wiring diagrams I have seen thus far.

Any help would be greatly appreciated.

Also does anybody have any electrical diagrams for the 2010? Pain in the *** they don't make it available.