Installing an XTrons aftermarket Android head unit into a 2009 Sport non-Bose. Could NOT get the steering wheel control buttons to work. Ended up connecting the Red/Black wire (wire that goes to the row of resistors inside the switch, according to the factory wiring diagram) to Key2 on the XTrons, then grounding the other SWC wire (Green/White). Key1 is not used and left capped. Works great, only took me 3 hours to figure out what the heck.