Hello, plan the purchase of a TFT screen and DVD player for my BMW soon, I need an AUX input on my radio! At the Pioneer DEH 7400Mp Radio I have an entry in the function menu, where I can switch the AUX input free, this also works, I can then connect 2 chinch cable at the back. I tested this once and connected the discman, but then only sound comes in the rear speakers, then I connected a dvd player, but there comes I can also control the loudness only via the DVD player, more precisely, I can’t control any functions via the radio, but only via the DVD player! Do you need an adapter for this??? Did you also hear that there are special adapters for the antenna input? Does anyone know about this? MFG HaXan