I started my upgrade today but got stuck at radio amp unit. My Q5 has factory sat Sirius radio and all I find in back rear bracket is an Amp unit with rectangular plug but not trace of Sirius unit. Kufatec cable came with an empty quadlock and wires and no instruction on how to mount MMI radio in trunk. Do you have any pictures on how to get cable wiring for quadlock and fit in to MMI HD radio?