Where is the horn connection? How did you adjust it? My 72 has a non working horn. I am looking for direction on how to remedy. TIA.I haven't gotten down to the lower parts, but on your second picture on the reverse I pull the thing apart and there are springs and little guides that had been filled up with gummy stuff. Silicone,a little fuel, and air cleaned it all out. Super simple and quite effective, marked difference.
Also adjusted the horn connection. I know it doesn't seem like much but for the life of my rig the horn has been hit or miss! Now it is full time.