Will this grille work with my factory wiring harness, or do I need an aftermarket harness for the LEDs?

The LED integration and wiring method aren't detailed in the specs—you'll want to confirm fitment and electrical compatibility before ordering, or reach out with your truck's VIN for a pre-purchase check.

Does the matte black finish need any prep or protective coating after install?

The matte finish ships ready to mount. No primer or paint required. You can protect it with a matte-specific sealant if you're in a harsh climate, but that's optional.

What mounting hardware comes with this grille?

The grille assembly is included. Fasteners and brackets needed for your specific truck aren't confirmed in the specs—check the install notes that ship with it, or have your dealer verify what bolts or clips you'll need from your truck's existing grille mount points.