Will this plug directly into my factory wiring?

Yes. This assembly is designed for the factory brake light harness with no rewiring needed. Plug in and you're done.

Do I need to remove the factory light housing?

Factory mounting points are used, so you'll remove the old assembly and install this one in its place using existing fasteners.

Will the smoked lens pass inspection?

Smoked lenses are legal in most states when brake output remains visible and adequate. Check your local regulations before installation—some jurisdictions have restrictions on tinted tail lights.