Hi guys,

I got some engine noise on my system, think it comes from the alternator cause it apears when i accelerate, it's sounds like whistling.. it was even worse yesterday (it was just constant) --> checked my deck and i had ground conecter in a very crappy manner, fix it and it became much better and but still can hear it from time to time.
i checked to forums and people say to use bigger ground and connect it to the chassi...
So the question is --> does it have to be the chassis or battery's ground is alright ? and is there a difference if i use ground from the decks harness or the thing on the back of the deck (that u screw on with rubber top)

Is there anything else that can be done ? @ my friend's work they use magnets on the wires to eliminate noise in equipment, is that a good idea ?