Here you go gang! I compiled a full wiring diagram PDF file for you to all enjoy for your 2002 Dodge Trucks. This is a heck of alot easier to read compared to the Dodge FSM manual that is just good old black and white. Go here to get it!
https://mopar1973man.com/cummins/articles.html/24-valve-2nd-generation_50/51_engine/electrical/