How do i enable the mic on my S2 when i run a stereo cable from the audio out (avic-s2) to aux in on my indash receiver. Im trying to run the handsfree phone thru my car stereo, however for some reason the mic is disabled when i connect the two. I can hear the person calling and run the navigation audio thru my car stereo, but they can't hear me. Have anyone tried this or have a solution. Thanks Jc