New OEM Ford Engine Fuse Box Wiring Harness NEW in the box - never find again.
This is made specifcally for 1999-2000 7.3 diesel motors only but Ford used 23 different harnesses in these years due to specific options. If you want excact match without adding or deleting plugs or wires, the number ON the harness must match YC3T-12A581-TT (I attatched a photo of how to read the sticker).
The differences are 4x4 or 4x2, with ABS or without, shift on the fly transfer case or without, dual battery or single; California emissions or without - you get the point.
IF YOU are willing to add wiring from your harness or delete wiring from this one, it also fits 2001-2003 Super Duty 7.3 models - the fuse box is the same in the years, just different options of course add to the fuse box etc. You can view the Ford forums on how easy it is to add the wiring to this fuse box etc, or not use extra wires.
OEM # YC3Z-12A581-TN - this is in stock though no longer available from Ford.