I have my ipod hard-wired to my factory stereo system with one of those Peripherial brand cables. I plug the end of that cable into the headphone jack of my ipod and keep it powered via the cigartete lighter charger. This has worked pretty well....
However, the issue im having is that with some of the songs, i dont get sound from my left front speaker. At first i thought the speaker was bad, but i dont have the same problem when i use a CD.
Also, some of the songs from my Ipod sound pretty low. I burnt some of these songs onto a CD and the sound was much louder and quality was much better.