Thanks guys, there's a turn signal switch on the top of the column, and earlier this AM, I did find a wire diagram for the '57 TS circuit. After work today, I'm going to compare the diag to the sliced and diced old harness currently in my column, but at first glance, it appears to match.
That said, I guess the next thing on the purchase list is a new TS switch. It's $150, and doesn't even include the turn signal lever, lol. I wish it were a '56 truck, bc then I could say it did not come with turn signals from the factory!!! Eesh.
