Do these plug straight into my factory wiring?

They're designed for direct swap at the factory mounting points. Your existing headlight harness will connect to the new housings—no custom wiring or adapter harnesses needed for basic operation.

Will the halos work as daytime running lights without extra setup?

The DRL function is built into these units. They'll operate as integrated daytime lights once wired to your vehicle's lighting circuit—no separate module to buy or install.

Can I use these with my factory bulbs or do I need to buy new ones?

Bulb compatibility depends on your exact model year and whether you're running halogen or HID. Verify your current bulb type before purchase; these housings accept standard replacements but don't include them.