In order to transfer the audio from EVO BMW CD head unit to Android BMW Navigator, please use our USB cable to make the audio works. Because there is no AUX in BMW cars with EVO system, the connection is different from AUX audio tranfer. The Wiring Connection has a few steps to go:
Step1: Disconnect the Original USB cable from the back of EVO BMW CD Head Unit.
Step2: Connect Original USB cable to USB Cable in Android BMW Navigator
Step3: Find the USB change-over cable in Android Power cable, and connect to the back to Original BMW CD Head Unit.
Step4: Connect +5V red wires