I don't have the direct answer to your question, but I have the next best thing. Go to:
www.bbbind.com
Select TSBs and enter your truck info. Then select Wiring. There will be a lot of sub-menus. Virtually every wiring diagram for your truck is there. Since they even give you the wire color, finding where your's goes should be a snap.
On a side note, where in MS are you? I call Pascagoula home.
Electronics Tech