I have a 2007 Mustang 4.0 V6 in a 31 Ford pickup. I have the engine and trans wiring harness, the gas pedal, the underhood fuse and relay box and the PCM. I have read articles on EFI and know what the sensors do. I bought a schematic of the car, but have a difficult time following it. It is probably simple to you all, but I can't figure out where to start. The PCM has 3 plugs. I have 2 of them. The fuse box has 3 plugs. I have one plug. Where do I wire in the switch, the ALDL, and the "check engine" light? I also bought a program to turnoff the "PATS", emissions, and a SCT handheld tuner. Of course I need the ALDL to use it. I read an article here about removing all the sensors, lay them out plugged in and remove any wires not connected. I planned to do that after I have it running so I wouldn't remove a wire I needed. Guys, any help on getting me headed in the right direction in getting my engine to run will be greatly appreciated. Thanks