Just went and took a quick pic of the horn. Yesterday I rode home in a bit of rain with wet roads for 20 miles of it. Haven't cleaned this part of the bike since I installed the horn. I've probably ridden in the rain 4 or 5 times since I installed the horn. It's a bit dirty, but not bad.
The relay is just in front of the horn. To the right of the horn relay is the inline fuse coming off the battery. The ground wire, which I need to get a terminal for, is to the right of the horn mount and attached to the other bolt that holds the rear fender on. If you look closely, you can see the plate from the Freak kit(where the toolbox normally sits) does a good job providing protection from from anything getting to the horn...mud, dirt, rain, etc.
