Will this bolt straight into my vehicle without any modifications?

Yes. This assembly uses factory mounting points — no drilling, cutting, or bracket work required. It's a direct swap for your OEM unit.

What happens if the bulb burns out later?

Halogen bulbs are standard and widely available. You can source a replacement bulb separately and swap it in yourself — no need to buy a new assembly.

Does this come with any wiring harness or connectors?

The assembly includes the housing and lens. Use your vehicle's existing connector and harness — they plug directly into the rear of this unit.