Originally Posted by SteelDirigible
....or does 04 have it near the brake as well?
For 04, the gray/black can be found at both places - at the SJB harness and in the wire bundle near the p-brake pedal. For 05/06, Ford deleted the branch of the GY/BK that had gone across to the SJB in 2004.
There are also other locations in the truck to find the gray/black but those mentioned above are convenient places in the interior to tap for use by the overhead console.