I brought a connects2, about £25 if I can remember correctly. It plugs into the back of the head unit, via the CD changer port, then you feed a 3.5mm head phone jack to the front (I used one of the blank tabs next to the ESP and tyre pressure buttons.
Anyway for some reason mine isn't working, ive been speaking to a guy on here as to why it won’t work, as he has the same thing and it works fine on his. I’m thinking that the RCD300 won’t support it as the guy im speaking to has the head unit with chrome volume dials?
Any thoughts as to why mine might not be working?
Sorry for stealing this thread by the way.