I can read a wiring diagram. Actually, this one is such a simple circuit, I bet anyone can understand it. The horns operate when the horn button makes contact inside the steering wheel with the spring loaded contact, providing a ground to the horn relay circuit via blue wire with a yellow stripe (which looks white to me) wire # 1. It's best depicted in the following I got from Fordification.info. Power is supplied unswitched or fused to the relay from the battery on the yellow wire #33. Wire #6 goes to the horn(s). Can't get much simpler. http://www.fordification.info/tech/i...ringMaster.jpg




I would really like for someone to explain the circuit shown in this drawing, also from Fordification. http://www.fordification.info/tech/i...lighting03.jpg
This appears to show wire #33 going to the center relay contact and wire #1 to the right relay contact. Those two wires have to be reversed for it to work. Wire #1 has to go to the center relay contact, and wire #33 has to go to the right relay contact.

 

Draw a North arrow pointing up on that diagram. By that picture, wire #1 is on the terminal closest to the southern side of the relay. #33 is the NE terminal, and #6 is the NW terminal. I just installed and wired up the horns on my '62 F250 yesterday. The terminals are configured in a Y, so that diagram just makes it look way too confusing with the staggered line they show. On my connector, wires #6 and #1 are on the top of the Y with #33 on the bottom.