Does this use the factory wiring harness?

Yes—this assembly plugs directly into the stock connector behind the light housing. No custom wiring or adapters needed.

Will the smoked lens still let light through when braking?

Absolutely. The smoked finish darkens the appearance while maintaining full brightness and visibility when the brake light activates.

Do I need to remove the whole light housing to install this?

You'll need to access the rear panel to disconnect the old assembly and swap in the new one. Basic hand tools and a few minutes—no drilling or cutting involved.