I remember the "turn signals" on my grandpa's '47 ton and a half. An arm just behind the driver's door, controlled by a lever in the cab. The lever had 3 nothces, 1st = stop, 2nd = left turn, 3rd = right turn. He used it all the time. I learned to drive in that truck and used them too.
Never quit working, no burned out bulbs or flashers!
