Do these need any bulbs or are they already installed?

Bulbs are not confirmed as included. Check your existing corner light assembly to see if the bulb sockets match—many direct replacements use the same bulbs as factory, so you may already have what you need on hand.

Will I need new fasteners or can I reuse my factory hardware?

Hardware is not included. Most direct-fit corner lights reuse the factory bolts and clips from your original assembly, so hang onto those when you remove the old ones.

Do these need paint or sealing before installation?

The smoke finish comes ready to install. If you want to paint the housing a different color or add protective clear coat, do that before assembly. Once mounted, minimal prep is needed—just ensure the mounting surface is clean and dry.