Do these come with bulbs installed?

The assemblies ship as shown — test the bulbs before final installation to confirm operation. If replacement bulbs are needed, standard automotive tail light bulbs are readily available at any parts store.

What hardware do I need to mount these?

Mount points and fastener specification vary by vehicle — check your service manual or the factory tail light housing for mounting bolt size and torque specs. Most installs use standard metric fasteners.

Can I paint or seal these before installation?

These are ready to install as-is. If you plan to modify or refinish them, test-fit first to confirm fitment — any adhesive or sealant applied before mounting can complicate removal or adjustment.