I was at a swap meet & ran across a NOS Klaxon K-3 #1935422 6 volt horn. The vendor told me they were made to add on as a third horn for a 1940 chevrolel. The physical shape is baiscally the same as the factory horns but the Klaxon is Bright Blue. It is a Delco-Remy Product in the original box.

Can anyone tell me about this horn?

Thank You

Sparky