Do these lights come with bulbs installed?

The assembly ships complete and ready to use. Confirm bulb type with your vehicle's manual before installation — some LED housings use proprietary bulb connectors.

Will these bolt directly onto my vehicle, or do I need custom brackets?

These are designed as a direct replacement. Test-fit before final mounting to ensure your specific year's bracket alignment — minor adjustment may be needed depending on condition of mounting points.

What's the return window if they don't fit?

Check the modsupply.com return policy on checkout. Most tail light assemblies are returnable within 30 days if unused and in original packaging — inspect fitment before installation to avoid any issues.