1939 Chevrolet turn signal switch, flasher has been replaced. I used 1939 Chevrolet fog lights as my front turn signals. Vintage Arrow turn signals in rear. Has blinked too fast from day 1. All wiring is new. Bulbs when flashing are bright. Left and right turn signals blink the same. I'll have to take the units apart to drag the bulb and flasher part numbers out of me.
Rick