Will this LED light work as a direct bolt-in replacement?

Yes — it mounts at the factory location with no drilling or modification needed. Just unbolt the old unit and secure this one in its place.

Do I need to replace the wiring or connector?

The assembly connects at the factory harness point. If your truck's original connector is corroded or damaged, clean or replace it before installation to ensure a solid electrical connection.

What's the advantage of LED over the original incandescent bulb?

LEDs light up instantly with no delay, stay bright longer without burnout, and draw less power from your electrical system. The chrome housing keeps the same polished look as stock.