Let's see if I understand this.
1. Someone put a used harness in the truck.
2. You have been cutting wires out of it without knowing what they went to.
3. You want to rewire 23 circuits.
4. You have never done any automotive wiring before.
5. You think a booklet will help you get through it.
If all the above is correct, I think you have a potential fire hazard in the making, not to mention the problems you'll have trouble shooting before the fire.
My advice is buy a harness.
