Hi, When I was removing my Pioneer AVH-P6600DVD unit from my old car, I pulled slightly too hard on the wiring loom, and 3 wires came off the plug - Can someone please help by putting a diagram, or explain the back pins of the unit - which color goes where in the plug, I can plug the wires back into the the plug, but I'm scared I might blow the main unit cause of wrong wires goin into the wrong pins...