Do these plug directly into the factory wiring harness?

Connector type and wiring compatibility not specified — confirm your vehicle's headlight connector against these projectors before finalizing purchase to avoid compatibility issues at install.

Will the smoke housing dim the light output enough to need high-beams more often?

Smoke tint reduces raw brightness slightly, but LED projectors compensate with focused beam geometry. Real-world performance depends on road conditions and your lighting preferences — test at night if possible before committing.

Do I need to adjust anything after bolting them on?

Aim and calibration procedure not confirmed — refer to your vehicle's service manual or have a shop verify headlight alignment after installation to meet road-legal standards.