Just to ease your mind, the electrical is easy. You will see when the time comes. PLEASE answer the questions/unknowns/concerns underlined in my previous post. VERY important, especially for wiring.
What field of engineering are you in?
Are you going to use a harness kit or wire you have? Harness kit would be a good idea. We can recommend. Don't need the kit to start truck. So it can wait.
Sounds like you do have a solenoid type starter and not a foot start. That means someone has done something.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn |