Will this plug directly into my factory wiring without an adapter?

Yes. This assembly is designed for direct connection to the factory harness at the mounting points. No additional adapters or splitters needed.

Do I need to remove the bumper to install this?

Access varies by your truck's year and trim. Check your service manual for the specific removal procedure for your model year—most installations require opening the tailgate area, not full bumper removal.

Is this just the light assembly, or does it come with mounting hardware?

This is the light assembly itself. Mounting hardware—screws, clips, brackets—are not included. Your truck's factory fasteners will work with the mounting points on this unit.