That really sucks that this had to happen to you. One advice I can give you is to give it a try yourself. Im not a wiring guy and yet somehow I am managing.
Read the instructions at least twice and lay out the entire harness. You will notice that every wire is labeled every 6 inches which makes life a lot easier. After that its really just about knowing what the different components are called. You have several guys on here that know the wiring on the Bronco by hard that can answer any question you have.
Once you turn that key and the rig fires up, thats an awesome feeling of self accomplishment. Basically you will be quite proud of yourself. The huge benefit is that you will actually learn something and also be able to diagnose things when something goes wrong. Its a good thing to know how something works.
It will take a bit longer but its worth it.