Will these work with my factory wiring harness?

Yes. These are direct replacements that plug into your existing harness connectors. No rewiring or adapter harnesses needed — disconnect the old lights, connect the new ones.

Do these come with bulbs installed?

The assemblies ship without bulbs. You'll reuse your current bulbs or source compatible replacements separately.

How should I clean and seal these before installation?

Wipe down the lens and housing with a clean, dry cloth before mounting. No special prep or sealant is required for the bolt-in install — just ensure the factory mounting surface is dry and free of debris.