hey i have a 2000 chevrolet s-10 4cylinder. i have a high pitch alternator whine through the speakers and idle and when i the rpm goes up the whine gets louder. the dash lights and the radio lights flicker at idle and get better once i give it gas but still flicker alittle. i have a new battery and have replace alternator with a factory replacement. the whine noise is still there with the flicking lights.

so then i wired in the battery feed wire to the radio a 20 amp noise filter. this has stopped the whine noise through the speakers but i still have the flicking lights on the dash and the radio. can any one help me?
thanks

Why did you put this in the Neon forum?

Try posting this in the Chevrolet forum.