This is the explanation of the Pioneer DEH-X6500BT Manual Diagram, I include diagrams for easy install on your vehicle. with this diagram will clarify also on the harness and the receiver to more clearly on the diagram above, the details can be found below
YELLOW = 12 Volts Constant +
RED = 12 Volts Ignition +
BLACK = Ground
BLUE / WHITE = AMP or Power Antenna On +
GRAY = Right Front +
GRAY /