That diagram is for a relay that was used with 1947-1955st optional dual “shell style” horns, and it was also used with 1953-55st single “shell style” standard horns.
The diagram is well labeled.
What kind/year horn do you have?
Where is your horn located?
Do you have a 6v positive ground electrical system?
Do you have the original-style “trumpet” horn, which was mounted on the intake manifold?
That horn had no relay (if I am wrong, we will soon see corrections posted).
