Where would I look for some kind of data plate (Ford, not Grumman-Olson) on this truck? I can't see it anywhere around the (one, curb-side) door. It's titled as a '68, but I wonder. I trace the brake-light problem to the turn-signal switch inside the hub of the steering wheel. The cancelling ring and other mechanical parts of this switch are metal; only the housing around the electrical part of the switch is plastic. But when I look at switches on the web for '68 Ford trucks, they look different, newer, with more plastic. I'm wondering if my p350 chassis is a '67 sold as a '68, or something older yet. The single-outlet brake master cylinder might be a clue; I thought all brake systems had to be the dual reservoir, dual outlet kind from about 1966-on.

Wonder why every car/truck I buy turns out to be an orphan, and finding parts an endless hassle . . .