I bought my first el camino about a week ago. Its an 81 3.8 liter V6 I have never worked on a car before and help would be greatly appreciated. She runs great but I just have to get her to pass emissions and make sure everything is working. There is a black wire with a green connector underneath the airfilter and i have no clue what it goes to or what it does. Also the fuzes are all good i just changed them out but my horn still won't work. I would post a picture but I can't figure out how.