Does anyone know if the 2005 A4 came prewired for the glove box CD changer? I'm looking to add an Ipod interface that plugs into the CD changer wire. If it isn't there, can anyone point me to where I might find one?

I would make sure that works, because ive installed many aux inputs/ipod controlls to audis and they always hook up to the back of the radio not to the changer cord directly.

I was thinking of using this product:
http://enfigcarstereo.com/shopsite_sc/store/html/DICE_I_AUDI_T2.html