I have been using the USA Spec interface for about a year and a half now and just recently started having trouble with it. Or something. Every so often while listening to the Ipod it will suddenly shut off. Just like turning off the radio. Sometimes I can turn the radio off and back on and it will continue right from where it shut off. Sometimes when I first turn it on it won't work even though it was on when I turned the car off. In these cases pushing the CD 6 button has no effect, it simply stays on the FM position. Sometimes it comes back on by itself. I did notice that when I shut the radio off the Ipod lights up for a short while, I guess because the interface keeps charging for some time. However at the times it shuts off by itself it does not light up. I can't figure if it's the stereo, Ipod, or interface. When playing the Ipod out of the car I don't have the problem. I have an 03 with automatic trans and the interface unit fits just forward of and to the right of the shifter under the console.