I restored this bike over my winter break this past December. This past weekend I installed a horn and the rear fender. A friend of mine installed new horns in his car so I installed one of the old horns on my bike. There is a 8- AA battery pack under the seat and the button to activate the horn is under the seat too. On the back of the horn it says "110 decibles" so it is pretty loud. If a car cuts me off they will get a surprise. haha. Also, the wooden handle is the handbrake. I welded V-brake posts to the frame and fabricated the lever mechanism myself. It only took a few hours. 8) Also, I had to cut the fender to stop at the seat stays because it would rub the big tire I have on it. The clearance between the tire and fender is about 2-3 mm.