i have a 2007 Z with the 6cd changer Bose head unit. i was a little disappointed there was no AUX input on it from the factory but, i have managed so far. But i recently bought myself a switching AUX input, and some ribbon cable for a little bit over $3.00, planning on severing some wires that from the radio signal, putting this in parallel with them, and in THEORY it should override the radio signal when you plug in the AUX cable while the radio is on. If any one has done this and has any pointers let me know, if not i'll let you guys know how i did it. thanks!