Cars and trucks have been sold with cornering lights that come on with the turn signals, when the wheel is turned, or both, for over 50 years. Watch any recent vintage BMW, or pre-2000 Cadillac take a corner and you can see the lights aimed about 45 degrees off center, sometimes mounted as part of the fog light assembly and sometimes as a separate light fixture on the fender, come on and stay lit for about 30 seconds after the corner is completed. Any shop that does custom lighting should be able to configure these for your truck. There are complete kits, but they could also be wired up using fog or driving lights aimed outward and a "cornering light relay" for an older car model that had them, like a 1980s or 1990s Lincoln Town Car; Ford probably still sells them as replacement parts.
