Do these lights bolt directly to the factory mounting points?

Yes, these are designed as direct replacements for the OEM side markers. You're swapping out the old housings with these smoked units at the same mounting locations — no drilling or bracket fabrication required.

Are the red bulbs already installed inside?

Yes. The bulbs come pre-installed in the housings. Just mount the lights and connect the wiring to your harness.

Will these lights fit if my factory markers are damaged or missing?

These replace the entire marker assembly at the bumper corner. As long as the mounting points are intact, they'll install. If the mounting tabs are broken, you'll need to assess the damage before committing to these units.