Parking brake light? Emergency flashers? Standard in 66?

The flasher switch bezel looked just like the map light bezel but said "FLASHER" on it and was chrome plated. A 66 Dart GT I parted out years ago had this option. I did save the bezel, switch and wiring harness, which was a piggy back plug in to the steering column harness.

Re: the Emergency Brake light - In my factory literature I have a pad the dealer used for ordering accessories. It listed "Parking Brake Signal Light" for the Dart/Valiant/Belvedere/Coronet with part number 2291 664 and listed for a whopping $2.19. I've got 2 NOS kits and from the instruction, it appears it was dealer installed.