Not an electrician so keep that in mind. I have CMD4A head unit and just purchased the Monster Ipod cable (as recommended on this site). Manual says I should have 2 pair of RCA connections unused behind the unit (one pair with purple wire and one pair with red wire). The purple pair is said to be non-fader r/l. According to manual, the other pair is for aux. The only other pair are black and not red. So...I plug into the black pair and then switch to Aux on the HU and the Ipod song starts playing - great and easy. EXCEPT no sound is coming out of the tower speakers when in Aux mode. If you keep the ipod playing and switch to FM on the HU, the tower is playing FM and the rest of the speakers are playing the Ipod. I am LOST... Other info....07 MC X1, with JL Audio amp (for the tower speakers) - all audio installed at dealer.
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