Okay, I have wiring diagrams! On the diagrams a circuit number is given - where/how do I find on what page that circuit number is? I'm trying to decode the 42 pin engine to wiring harness connector on a 2003 Ranger w/2.3L Duratec and five speed auto trans. The connector pin-out just gives the circuit number and color of the wire, not what each wire does/where it goes. What I can't find is a circuit number guide/index, or anything explaining how to find each circuit. Can someone guide me here?