Will these mount directly to my Columbia without any adapter brackets?

Yes. These mount at factory rocker and support points — no drilling or brackets needed. Just bolt them in place of the originals.

Do these headlights come with bulbs installed?

The projector modules are LED-integrated, so you're not swapping traditional bulbs. Test-fit before final mounting to confirm electrical connection type with your truck's wiring harness.

Can I install these myself, or do I need to take it to a shop?

Designed for DIY installation with basic hand tools. Most builders complete the swap in under an hour. If your harness requires splicing, have an electrician handle that piece.