The manual explicitly warns not to connect shielded cable drain wires to the X4 terminal. Instead, ground the shield at the controller end only.
Find the proprietary AMI or MDI port in your glove compartment or center console. Plugin: Insert the AMI-LY-005 adapter firmly into the port. ami-ly-005 manual
: Some models include an extra USB lead (approximately 3ft long). If the device does not light up upon connection, plug this USB connector into a cigarette lighter or USB power outlet to provide power. Activation : Set your car's head unit to mode via the MMI/iDrive system menus. Turn on Bluetooth on your smartphone or tablet. The manual explicitly warns not to connect shielded