Thank you Uncle Grump for a more definitive wiring diagram. Maybe you can help me with the impending problem. Bronco was running fine until I changed the Positive battery cable along with a new battery. Of course, I pulled off all the wires from the starter relay (mainly the three on the cable to starter side of the relay) the new cable attached to the other side of the relay by itself. When all was cleaned and tightened, I put the negative cable on the negative post, but had a zap of electricity between the two. I jerked it off within about 5 seconds, but noticed a puff of smoke from the starter relay area. I isolated an orange wire, and put the other two back on. I tried to start the car, but got nothing when I turned the ignition switch. I then tried the headlight switch. No lights, no power to inside car. So I am thinking the orange wire has to be power needed to start and make the lights work. I did check all 3 of the fusible link wires for continuity, and they checked OK. I am also thinking that I blew something some where else in the circuits. Ignition switch? Main question: why is the one orange wire not going back where it was originally, without seeming to be a direct short? Sorry for the story book, but I had to expose all of my ignorance about electrical circuits. Thanks for any light on the subject.