I just bought this ipod adapter (audio cable + car charger) to use on my boat because I have the adapter plug in my glove box. However, it did not work for some reason. I have the stock Kenwood head unit that comes with the Supra (08' 21v). The adapter I purchased was made by Gigaware and came from Radio Shack. Not sure why it didn't work, no music came out of the speakers when in the Auxiliary mode.
So I'm going to take it back. Do you have a suggestion on an adapter + charger that you've had success with?