Will these fit without any modification to my current headlight wiring?

They bolt directly to factory mounting points. Wiring compatibility depends on whether your truck's harness supports LED or if it's currently halogen—you may need a simple adapter or resistor module to prevent error codes. Test-fit before committing to electrical work.

Do these come with bulbs installed?

The LED DRL elements are built into the housing and powered directly through the assembly. High-beam and low-beam socket positions accept standard bulbs—check your owner's manual for correct bulb size before ordering separately if replacements are needed later.

What happens if one housing gets damaged or fails—can I return just one?

These ship as a pair. Damage claims and defects are handled case-by-case—reach out to customer service with photos. Wear and normal use are not covered, but manufacturing defects have a clear path to resolution.