Mystery Harness

[tinygiant]

I'm installing an alarm/remote start into my wife's '04 X 6.0. I needed a tach input and was told that I could use a wire from a 5-pin harness taped up just above the emergency brake pedal. I found the harness in the truck, but I can't find the harness or any of the wires anywhere in my factory wiring diagram manual. Does anyone know what the other wires are for or what the connector/harness designation is so I can attempt to locate it in the wiring diagrams?

Thanks,

[NYC F-350]

Those wires are right where you described. They are dead-ended with black shrink wrap on the ends of them...

[tinygiant]

NYC,

Yep, got the wires, just wondering what the others wires were for or what signals they carried.