Do these mount to the factory grill or do I need brackets?

These are designed to fit into your factory grill openings directly. No additional brackets or modification needed — just drop them in and secure with the provided mounting points.

Can I wire these into my existing DRL system or do they need their own power source?

The harness is DRL-ready and plugs into factory wiring locations. Route the wire to your vehicle's existing DRL circuit or auxiliary power depending on how you want to run them — check your factory service manual for the exact connection points.

Are these Amber and Smoke separate units or do they change color?

You get Smoke/Amber finish units — this describes the lens color and LED output. They're not color-changing; the finish is fixed. Smoke gives you a darker appearance, Amber provides the warm glow typical of driving lights.