Okay guys heres the problem..I have a 2000 F150 XL 4x4 with the 5.4 motor and 7700 package. Its got 193,000 miles and still kicking strong. There was a problem with the wiring which caused an engine fire

After getting the bugs out (or so i thought) I noticed my 4x4 isnt working. I can engage the lever and it shows on my dash its in 4x4..but the hubs wont lock in. there are some parts still missing under the hood on the passengers side. if anyone could post some pics of under the hood maybe i can track it down?

or if someone could help it would be much appreciated..thanks!