lag2865

Hello all, I have a 2006 MDX Touring w/ Nav. My son will be driving it and of course wants to listen to music from his Iphone. I know there is a Aux jack in the very rear passenger side armrest as part of the rear entertainment. So, we bought a 10 foot Aux cord and ran it under the seats and mats. We can not get the music to play. We know we are likely do something wrong with regard to setting it to rear ENT/source. At one point, we had the music playing but very very faintly......not acceptable standards for a teenage boy I no longer have the manual. Anyone out there that can help?