Yes, i have a problem with a noise in my speakers. When i turn on my ignotion and start th engine, my cd player turns like it is supposed to. However, as i accelerate, there is a high pitch noise that is in my speakers. AIt also makes this noise when i turn on my a/c. The higher i turn on the ac, the louder the whining noise gets. I figured it would be a ground problem. I wanted to make sure. Is the ground in my amp, or the ground in my cd player making the noise. Thanks

 

Check your ground on amps, make they are as short as possible( around one foot long). Scrap off the paint where it makes contact don't just put a screw through the metal. Try to stay under a foot long. Make sure you don't run you RCA cables next to any power wires except where they have to.