Originally Posted by BigBoosting
To install the 4 wires from the USB/AUX socket to the MULF you need to 4 extra plug pins to install those wires into the blue 54-pin plug.
Where did you get the correct pics so that i can crimp them on my extended wires and then push them into the blue plug?
you'll need MQS pins.
bmw sells the wiring pigtails with MQS pins. alternatively you can buy just the pins and crimp them yourself.
This is what I bought when I did my retrofit.