6 or 12 volt

Six volt horn without a factory relay doesn’t sound? If you use the original 6 volt system, you “cannot” use the gray plastic incased brush and contact that also slips into the steering wheel hub on the 1947-52 First series Chevrolet/GMC Trucks. It is continually advertised for the 6 or 12 volt system. This is made only for the 12...