I recently replaced my head unit and speakers. New wiring and everything. The place that I took my X to did a horrible job.

Whenever I accelerate there is a horrible whining noise. It is there at idle too..I just gets higher pitched with acceleration.

So damn annoying! The mechanic proceeds to add noise filters and they do nothing. I told him fix your wiring job. That is the problem.

I asked around and was told that cables touching or cables bunched together can lead to this. Does anyone know the solution? Thanks