Audio Systems: buzzing sound from isimple device, jeep aux input, jeep auxiliary audio input

Question
Pie X3-CHRY02 Jeep 2002-2006 X3 Triple input auxiliary interface   is what i just installed with an isimple 1s276 problem i have is buzzing whenever the iphone is hook up it is annoying and loud . i have a 2004 jeep grand cherokee with factory premium system without navigation powerbass 3000 amp 2 kicker solorbarics L5 with a jensen 4 channel pushing my highs all works fine before the hook up of the isimple could it possibly be the ground for charging

Answer
The Jeep auxiliary interface Pie X3-CHRY02  needs to be  behind the radio and not at the cd changer location, get the ground from the same source for the radio the input adapter and the isimple cable