Someone enlighten me. Do we not have speakers in the back seat behind the passengers head? My friend was sitting back there and he is telling me no sound is coming out. So I start toying with the unit thinking the fade is messed up, not that, so I check all the wires, not that, but then I look in the under side of the trunk and I swear all I see is the underside of the grill that is supposedly covering the speaker. Is there no speakers back there or are mine F'd up??