Do these bolt straight onto the factory mounting points?

Yes. These mount at the original marker locations with no drilling or bracket fabrication. Use your existing hardware to secure them in place.

Will the smoke lenses cause any visibility issues?

Side markers are secondary lights — they're designed to enhance appearance on cars that already have functional headlights and taillights. Visibility impact is minimal, but verify local lighting laws before installation if you're in a strict jurisdiction.

Are these plug-and-play, or do I need to splice wires?

Wiring configuration is not specified — test-fit first to confirm connector type and compatibility with your harness before committing to any permanent connections.