Do these plug directly into the factory wiring harness?

These are designed as direct replacements and use factory mounting points. You'll need to verify connector compatibility with your vehicle's existing harness before final installation — some adapters may be required depending on your model year.

Can I switch between amber and white light modes while driving?

Switchback functionality is built into the LED array, but the switching behavior depends on how you wire the assemblies. Standard switchback setups use running lights as white and turn signals as amber — no manual switching required while driving.

What's the difference between these projector lights and reflector headlights?

Projectors use a lens and concentrated beam pattern for sharper cutoff and better light distribution on the road. Reflectors spread light more broadly. Projectors generally deliver better visibility at night and a cleaner visual appearance during the day.