[Perfectlap]

good question when are you getting the alternator whine? When the stereo is playing direct from the headunit or when you try to plug in something through via aux jack?
I tried to hard wire my Sirius satellite and got unebearable whine. Had to go back to the awful looking cigarette lighter. I would also get the whine with my MP3 player. Let us know if the RCA cables work when you are using the aux devices.