Will these fit my stock wiring harness?

Yes. These mount at factory connection points and work with your vehicle's original electrical connectors — no wiring modifications required.

Do the bulbs come installed?

The units ship complete, but confirm bulb condition upon arrival and replace if needed before final installation.

What's the return window if they don't fit?

Check our return policy at checkout — most items have a standard return window, but timing starts when you receive them, so test-fit promptly.