Originally Posted by
BigAl205
First of all, welcome to the community!
I only have the schematic for a 2008, but assuming nothing changed for 09/10, there should be a 6-wire harness with yellow, blue, green white, brown, and light green with red tracer.
The green is the signal negative, white is left channel positive, and brown is right channel positive. The yellow wire (positive) and Blue wire (negative) is the auxiliary detection circuit which tells the radio that something is plugged in and it should switch to AUX mode. Light green/red is just a shield.
I don't think your two-wire port will work. First of all, it wouldn't be stereo...and secondly, it wouldn't have any way to tell the radio that something's plugged up.
You may have to get a stereo 3-conductor jack to splice in, and maybe put a switch beside it to fool the sensor circuit in switching to AUX mode.