One of the more asked questions on the 1941-46 GM trucks is regarding horn contact parts. Most have been damaged over the years and new owners are unsure how they were originally assembled.
Below, is a diagram from a 1940’s GM Master Parts Catalog and gives an excellent view of the parts used in the assembly.
Most items are currently reproduced, including the upper bearing, rubber bumper, cap assembly, steering wheel, mast jacket, 3 finger horn cap retainer, and internal cap spring.
Note: Added are the available part numbers from the Jim Carter Parts Catalog.