what is the number on the little yellow plastic tag? There may be another tag on the wire, one for each digit.
It is most likely a ground wire but without more info it is impossible to tell for sure.
The schematic indicates ground but i was hoping someone could show me where it is ground. The wire is only about 6 inches long so it has to be around the area shown on my photo right above the engine label on the rocker cover. Is it the rocker cover nut maybe?
I think it goes under the top fuse block screw and grounds against the metal bar that holds the block.
Zoom in on this picture and I think you can just barely see it under the block and the tag is next to the horn