I got too impatient and also did not feel like opening / soldering inside the stock unit. What I ready it is also up in the air whether it would work or not with a car without an OEM CD Changer (my car has OEM single-disc and an aftermarket JVC changer in the trunk).
I ended up going with an iSimple ISFM22 FM Modulator that puts the output from my iPhone directly into the FM antenna (no broadcasting, it overrides any channel the antenna picks up).
Leptronix Aux-In
in Interior/Audio
Posted
how did it work out for you??