im looking to put a standard cd changer into my 2001 a3 but im not sure whether it is meant to go in the boot above the subwoofer or in the glovebox? is there anyway to tell? also i heard on the grapevine that the wiring for the changer is already there its just a case of plug in and go? is this correct? pictures of what i should be looking for and places to get standard cd changers would be helpful cheers!