Just bought a Kenwood KDC-MP919 (http://www.kenwoodusa.com/product/product.jsp?productTypeId=20&sortBy=price&productId=2384) and was about to install it and hook it up to a JBL BP600.1 (http://www.jbl.com/car/product.asp?prod=BP600.1&ser=POS&cat=AMP). I need to know if the amp was housed in the same unit (in-dash 6-disc changer) so I can use the amp-turn on cable for my JBL amp, or do I need to split it?