Will these bolt directly into my factory fog light openings?

Yes. These mount at the factory fog light locations on your Altima's front bumper — no drilling or modifications needed. Use your existing mounting points.

Does the switch need to be wired separately, or does it work with my existing electrical?

The switch integrates with your vehicle's existing fog light wiring. If your Altima already has fog light circuits, the new switch ties in directly. If you don't have a pre-wired circuit, you'll need to run power and ground from your battery or fuse box — basic wiring task.

Are the bulbs included, or do I need to source them myself?

Bulbs are not included with this assembly. You'll need to purchase the correct bulb type for your Altima separately — check your owner's manual or ask us for the exact spec.