Does this kit come with bulbs?

The bulbs are not included in this kit. You'll need to source replacement bulbs separately — check your vehicle manual for the correct bulb type and wattage.

Do I need to tap into the factory harness or run new wiring?

The switch routes through its own control line. You'll need to run the switch harness to your interior cabin — refer to a service manual or professional installer for proper circuit integration to avoid overloading existing circuits.

Will this fit without modifications to my bumper?

This kit is designed for factory mounting points. Test-fit the bezels in your bumper opening before final install — aftermarket or damaged bumpers may require reinforcement or minor trimming.