I was having a buzzing issue with my speakers and after changing grounds and RCA's I decided it was my HU. I got the Avic-N2 installed and now I have the worst alternator whine i have ever heard. While idling it is there and as I get higher in the RPM's it increases. I even have alternator whine when I shut the system off. Does anyone know why it is so bad and what could have caused it? Again it started after I got the N2 installed. Thanks