Do these need bulbs, or are the LEDs built in?

LEDs are integrated into the housing — no separate bulb purchase required. Connect to your vehicle's existing wiring harness.

Will these bolt up to my factory headlight brackets?

These use factory mounting points — no drilling or bracket fabrication needed. Bolts align with OEM locations.

Do I need to reprogram my vehicle or modify the wiring?

Wiring compatibility depends on your specific model year and dash controls. Test-fit the connectors before final installation to confirm compatibility with your harness.