Will this headlight work with my factory wiring and bulbs?

Yes — this is a direct replacement that uses your existing electrical connectors and bulb sockets. No rewiring required. Verify bulb type compatibility with your vehicle's service manual before install.

Do I need both left and right headlights, or can I buy just one?

You can buy individually, but for best appearance and consistency, both sides should match. If you're replacing one damaged unit, buying a pair ensures uniform look and light output.

What if the headlight doesn't seal properly against water or moisture?

Test-fit the assembly in its housing first. If gaps appear, apply weatherproof silicone sealant around the perimeter before final installation. This prevents moisture intrusion over time.