Do these mount at the factory locations or require new holes?

They mount directly at your truck's factory fog light points — no drilling, cutting, or relocating necessary.

Is the switch plug-and-play or does it need to splice into the dash harness?

The switch comes pre-wired with a complete harness. Connection method depends on your truck's electrical setup — check your service manual or consult an installer if you're unsure about dashboard integration.

Will the smoke tint reduce how bright these lights are?

Smoke tint reduces raw output slightly but maintains functional illumination for fog conditions. If maximum brightness is your priority, compare spec sheets with clear-lens alternatives.