So it seems that the person who installed the horns bypassed the relay that is in between the horns and used the one that is on the firewall. The two wires from the horns are on the same terminal as the one from the firewall relay: the H terminal. The horns are a high and a low note. The bracket is actually well made so I’m going to keep it. As far as being worried about “illusions” of stock, that ship left the dock a long time ago. I don’t have time today to finish the job, but I’ll post shortly about the outcome.
Thank you all for the help.

Larry