Thanks for the feedback. I was able to confirm over the weekend that I did have power to one of the posts and when I put a jumper between the two the horn goes off. I took apart the parts in the wheel and cleaned it up but still no go. I will have to figure out how to test the slip ring continuity. I see they sell rebuild kits so I may order one just in case but based on the feedback and what I'm seeing so far it does in fact seem like a wheel issue. Thanks as always for the insight.