Will this plug directly into my factory wiring harness?

The assembly is designed for factory mounting points. Verify your vehicle's wiring connector type before purchase — adapters may be required depending on your model year.

Do I need any additional fasteners to install this?

The assembly mounts at factory locations. Fasteners are not confirmed to be included — source appropriate hardware for your specific vehicle to secure the unit.

Is this street-legal?

This is a replacement brake light assembly. Compliance depends on your local regulations and proper installation — always verify that all brake lights function correctly after installation.