Do these mount to the factory headlight brackets?

Yes, these are engineered to mount at factory attachment points with no drilling or modification required. Test-fit before final torqueing to ensure proper alignment.

Do the LED halos stay on all the time, or do I control them separately?

Halo operation depends on your vehicle's wiring. Most setups tie them to parking lights or run them independently through a relay. Consult your vehicle's electrical schematic or work with an installer to confirm control options.

What bulbs do I need, and are they included?

Bulb requirements are determined by your vehicle's original headlight spec. These housings accept standard bulbs for your model — verify your OEM bulb type before purchase. Bulbs are not included.