Bought my truck in March with a hole in the steering wheel near the spoke on the right side, and a craptacular toggle in the same spot at your horn button. There were cut wires in the steering wheel hole, and the toggle ran to the horn fuse. Disabled both but want to fix the horn. SRS light is already on, so...
I'm also looking to do my sleeping platform in the next month. Was nice to get the updates on this thread via email today.