I installed a Dual XVM296BT headunit into my 2012 Ford Fusion. It all works fine, except a white noise comes through the speakers when itís turned on. When the RPM goes up in my car, it gets a little louder. It isnít noticeable if the music is cranked, but I donít always want to be rocking out to avoid the annoying noise. Iím not too experienced so please if you have any advice, it is appreciated. My car I believe has a built in powered amp, Sony speakers. Thanks!