Sounds like the driver's side horn maybe has a short in it. I don't know if my horn disassembling experience will do you any good on a '54 horn. I sent you an e-mail showing what my horns look like.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.