The 1939 Double-Duo Horns were available as an accessory. The part number was 985442.
DESCRIPTION: Two high quality vibrator type horns, complete with switch, relay and necessary wiring.
SELLING POINTS: Chevrolet Double-Duo-Horns are louder than before and they offer an entirely new feature - a switch to control the horns for city and country driving. Realizing that courtesy makes safety, drivers can switch to the city-driving horn when in town. In the country, the double-trumpet horns can be used. They give a strong, powerful warning signal.
INSTALLATION: Installation instructions are included in each package.
PACKAGING: One set of Double-Duo Horns with switch, relay and wiring packed in a shipping carton.
MODELS: 1939 Master and Master Deluxe Models.
PRICES: List $9.50 NET $5.70
This information is taken from an original description sheet from Chevrolet in 1939. It shows a picture of the horns and the dash mounted switch. The switch is printed as:
HORN
CITY COUNTRY
In 1940 the switch is printed as:
HORN
TOWN COUNTRY
Installation instructions were also included for the cars and trucks. My brother-in-law gathered all the original 1939 Chevrolet accessory printed fact/part information. I made them into a book for him. The book contained 339 pages of accessory information.
Rick
