Will this need bulbs installed before use?

Bulbs are not included with this assembly. You'll need to source the proper bulb type for your vehicle and install it into the housing before mounting. Your service manual will spec the correct bulb type.

Can I install this myself with basic hand tools?

Yes—it bolts to the factory mounting points on your chassis. You'll need a socket set and maybe 20 minutes. No drilling or welding required.

Do I need to paint or prep the black housing before installing?

The black finish comes ready to mount. No paint or prep work needed. If you want to customize the finish after purchase, that's on you—but straight installation requires nothing extra.