nice looking. i am more partial to the 88-94's myself. my 93 doesn't have cab lights which i'm thankful. wonder if they were an option during those years? seems all the 3500's had 'em.
There's a requirement to have the clearance lights on vehicles over 80 inches (2032 mm) wide: https://one.nhtsa.gov/cars/rules/standards/conspicuity/TBMpstr.html
So there's a lot of 3500s (especially duallies) that are legally required to have them.