Hi,
Was wondering if anyone has a solution for the high frequency wine that changes with RPM?

This seems to come through more with CD's than FM and is a quiet high pitch that changes with RPM's. I think it might be some kind of noise from the elctronic ignition as the crank sensor speeeds up but it does seem to kind of math the frequency of the turbos.

Thanks,
MiCk

 

try grouding the rca jacks to the deck

 

its probably alternator whine coming through the speakers. check the grounds and power lines on the deck and any amps you have make sure they arent crossing any speaker lines. thats why power lines should be run on the opposite side of the car from the rcas.