The clicking proves the clock spring is okay because it is reacting to pressing the horn button.
The relay is an electrically-operated mechanical switch. The circuit is broken into two parts. The low-current circuit includes the electromagnetic coil that is operated by the switch. We know that is working by the click you heard. The high-current circuit gets turned on when the relay clicks. That is not working because you do not hear the horn.
A common test is to turn the relay on manually to determine if the high-current circuit is working. That is real easy to do, except there is a protective plastic cover in the way. That is what I was asking you to remove. The problem is you cannot just wish it off. You have to remove the relay from its socket so you can pry, poke, and grunt as necessary to get the cover off. Now, if you reinstall the relay that way, without its cover, it is usually real easy to push the movable contact by hand. If you are fortunate enough to hear the horn, and it sounds right, all of that circuit is working and there is no need to look there for the cause of the problem.
Basically I just butted into your conversation and sped things up by giving you two tests, and one of them already identified one half of the system that is working. That observation took less than one second and eliminated the need to look at half of the possible suspects, including the clock spring. That leaves the twelve volts that is supplying the relay's switch contacts, the horn(s), and the wires in between. I am sure Saturntech9 will get you to the solution, but I can always come back and stick my nose in here again.
Monday, February 6th, 2017 AT 5:39 PM