hi, i've installed a harmon kardon drive & play in my mk5 gti w/mfd2 and found an adaptor from the aux port on the mfd2 to phono from ebay for about £12. i'm trying to sort the same setup for a friend who's got a mk5 but has the rcd300.
from what i can tell, there isn't an aux port on the rcd300 so i think i'll have to use the cd changer port. i've had a look on ebay etc. and can find phono/mini jack converters but it uses some sort of black box to do it and costs about £40.
question is, do i need this box, what does it do that a simple cable doesn't? anyone done this before and can suggest the cheapest way of sorting this out (seems ridiculous that i can buy a drive & play for £30 and would need to pay the same again for a cable.
thanks in advance
andrew