I did a search but couldnt fine what i was looking for, I had alpine head unit iinstalled a yr ago and have been liiving with a whining noice that get louder with thr increase of RPMs or pressing a power button such holding down the power window button. I've kinda got use to it but im looking to sell and upgrade mustangs and i want everything to be right when i sell it. I have hear two different reasons why this may be happeneing, a bad ground or i need a filter? ( the last siggestion came from a stereo store, same ones who installed the unit so im not really trusting them.
thanks for any help
thanks for any help