Hello, this topic has been dealt with several times in some form, but I haven’t found a solution for my problem yet. I have a Fiat 500, built in 2010. Built is an original radio from Bosch (Fiat 312 MP3). Furthermore, the car has the Blue & Me system with Bluetooth, hands-free, USB. Since it doesn’t work so well to listen to music via the USB port, I wanted to retrofit a simple AUX port. Just ordered an ISO Aux cable. This p but I would accept it. (There is a possibility to use both in parallel???) Supposedly you should be able to switch the “CD” button to AUX by two times pressing it. However, there is nothing to do with me!!!. It only appears “CD” or “No source”. What can I do? So can’t the radio be operated via AUX? Who can help me?! Greet Alex