 can't remember for sure but that relay may be the same as the horn relay under there you might be able to just swap those two and see what happens and one of the tests would be swap them and then hit the horn and when the horn honks if it doesn't stop honking that's what's going on because some of the relays can once they close they stick and they stay on but if you pull the relay out and disconnect the power they'll release until they're activated again relays