Model A Ford - Horn Breakdown and Assembly

In this video, I take a Sparton horn apart (partly) and put a Stewart-Warner horn together, along with some comments on how to clean and test horns and the differences between Model A horn suppliers.
Update: After making this video, I put the S-W horn on the car and had trouble getting the ahooga to sound correctly. I ended up swapping the reproduction adjustment screw back to the original (just the screw, not the whole assembly). The original screw was longer, which let me put less tension on the ratchet. Like I say in the video: keep your original parts!