Audio input for BA

[greenman43]

Hi all ,picked up my XR8 today, and needless to say I'm very happy indeed (apart from the timing: double-demerit points weekend here in NSW).

Does anyone have experience of the auxiliary audio input cable in BAs ? I ordered it as an option, so I can plug in an MP3 player. However, the dealer seems to think it consists only of a (RCA?) socket in which to plug a cable, and I thought it'd be the cable itself. Do all BAs have this plug, located under the little tray where the tissue box sits ?

Any help would be appreciated, before I go back and do battle.

Thanks in advance,
Brian