Do these headlights require bulb replacement or are they fully sealed LED units?

These are sealed LED assemblies—no bulb swaps needed. The switchback LED is integrated into the housing, so maintenance is minimal beyond standard cleaning of the lens.

Will these fit my truck's existing headlight buckets, or do I need new mounts?

These are designed for factory mounting points on the specified Volvo models. Test-fit before final installation to confirm alignment with your truck's headlight bucket and wiring harness location.

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

Switchback headlights typically integrate with existing harnesses, but wiring specifics depend on your truck's electrical setup. Verify connector compatibility with your model year before ordering—factory harness modifications may be required.