Ive installed many stereos in my day on almost every domestic vehicle on the road.this land rover disc2 is knockin me thru a loop!! Anyways i know amps and understand signals and remotes but my question is-there has to be a way to keep your stock amp running all your speakers but getting the signal from an aftermarket deck.and this"rave" thing i keep reading about it? Where can i find one and is this the actual name for it?