Hey guys, i've been getting an anoying screeching coming from my component speakers and a deep rumble coming from my sub when ever the car is running, the noise gets louder as the RPM increases. Also when ever you change songs or turn the deck on/off there is a poping sound. I've had my system in for about 3 months now and this JUST started a few days ago. I didn't have this problem at all until now. I have My RCA's run away from the power wires, I also have both amps grounded to the same location. I tryed grounding the RCA's using some spare speaker wire, this gets rid of about 80% of the noise. My deck is a Kenwood KDC-X991 and my amps are a Sundown SAE-1000D and a Sundown SAX-100.2.

Any incite would be greatly appritiated.

Thanks in advance.

Have you tried regrounding the actual head unit? What about the engine wiring? Any corrosion there?

Yes I did, no difference. As far as I know there are no corrosion in the cars electrical.

Check to make sure that your grounds haven't worked themselves loose.

I checked all of the grounds and they seem to be in place. I decided to unplug the alternator and the anoying screeching noise went away but there was still a horrible ticking noise coming through the speakers. So, i changed the head unit groud to the same place as the amps are grounded, which is underneath the rear seat. once i did this alot of the noise went away but it still there and when i touch a wire to the factory ground and back to the head unit ground the noise strengthens again.

Also when i switch between high beems and low beems there is a poping noise coming through all the amped speakers (front comps and sub)

any ideas?!? i'm not sure what to do next.

Thanks for the assistance offered but i'm out of ideas. I'm going to take my car into a car audio shop and hope that they can fix it.

check rca's

Already have, even went and bought new ones.