2011 Volvo FM usb/aux cable

Got a 2011 fm, it’s got the Delphi Bluetooth Volvo radio in it, it has the button on the radio for the aux, but the truck didn’t get the audio upgrade when new so there’s no wires for the aux at the back of the radio but there is a port for it. The blank plate is there on the dash aswell next to the 12/24v sockets, my question is where can I get the wires for it to upgrade it, I’ve been to Volvo and they said the wire is £175 which is a proper rip off the usb/aux plate for the dash is 75p wtf??

Moved this to the Pro Drivers Forum, it might get a better response…but there is no guarentee of that. :laughing: