Turn signals were optional equipment on these old trucks, not mandated by whatever agency mandates that sort of thing till the 60's.
As a result, the only lights a '49 Chevy would have had on it when it came out of the factory would be the headlights, and the parking lights in the grill.
"Aftermarket" turn signals were commonly installed right on top of the fenders, altho i've also seen some installed in the fenders just below the headlights.
In my opinion, the best looking option for turn signals in an Advance Design truck is to convert the exsisting parking lights into dual purpose lights used for both parking lights and turn signals.
You'll need to use a dual element bulb to do that.. one element is used for parking light, the other element is the turn signal.
Rear lights are the same story.. the trucks shipped from the factory with a single brake/tail light.. located right above the licence plate mount.
