I finally finished my sound system upgrade in my b6 a4 but i have two issues i was hoping someone can help me out with. I got Pioneer 930BT, infinity kappa 62.9 speakers all around powered by MTX TE404,2 MTX TR55 12" in factory ported box powered by Alpine PDS 1.600 amp. And Streetwires capacitor 1F. Everything sounds good untill i start the car. There is a whining/hissing noise almost like a mini supercharger. The more i accelerate the louder it gets. My ground is sanded and is connected in the trunk. What could it be? My power wire from headunit goes to fuse box.

Issue 2: how to i connect my auto dimmer wire from nav unit to to the vehicle's headlight circuit in order for this feature to work.


Uploaded with ImageShack.us



Uploaded with ImageShack.us


Uploaded with ImageShack.us