Hello, I have installed to my 8P new front speakers and sub + amplifier. Now I think that the factory sub and factory rear speakers are uselessnes, so I want to remove those from my car audio. Which wires must be removed if I want to shut down those speakers? I think that (cutting wires) is the easiest way to remove them, isn't it? Then I can set from my CD-player fader as "0" and there only plays front speakers and subwoofer.