So im looling for a wiring harness to put in my 79 bronco. It has the 400 and auto. Dont have to much money to spend it runs great just wires are starting to get hot and smoking under the dash so i prefer to rewire the whole thing. Pulled out the gauge cluster and found a bunch of burnt wires. Thanks for your input

 

With a truck that out a junkyard is out of questions, so you have only two choices: Either you research the heck out of it and make a new harness using whatever diagrams you can find and measuring everything out or you buy a premade after market replacement, but that won't come cheap. If things are getting hot behind the dash you should look into getting that fixed ASAP.