My horns didn't work when I first got my '48.There were 2 flat pieces of Bakelite in the horns. I guess, when they vibrate, they make the noise. They were stuck together so I slipped a razor blade between them and they worked.
When I went to 12-volts, I wired them in series (with proper insulation here and there) although that might have been overkill.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
