Got a new stereo for my 2002 Cooper S. Only really got it for the USB connection, so I can plug in my USB stick to play music rather than having loads of CD's lying about. Got a cheap adaptor plug for it, but I saw a link for fitting stereos which goes on about a "harman kardon" & that a special plug is needed. Does my car have this harman kardon, or will the cheapie one I've ordered work with it. The ones I've seen in halfords look just the same as the one I've ordered.