can not locate the horn relay on my 2012 super duty f250 ... my horn isnt workin

What is your question?

i already checked the fuse a few times and is fine, i replaced the factory horn, but i cannot locate the horn relay and in the manual the truck cam with it is not labeled in any of the fuse boxes. I failed inspection due to this and any help would be greatly appreciated! What seems to make the problem better or worse? none How long have you had this problem? 1 month