Look through older posts, someone posted a Task Force wiring diagram, if you're talking about your Advance Design truck, the fusebox changed over the years, early models had 10 or so fuses, then they changed to two, go to The Old Car manual Project and search the shop manuals until you find the one with a fuse box that matches your truck, down load it and print out several copies, use one as a cheat sheet as you work on the truck and use a pencil to make notes as you go along....
This is do - able and not as challenging as you think .
I get lots and lots of electrical jobs because I take the time to sort them out , it's just time consuming and I use a note pad with lines on it to make notes as I go along .