Will these plug into my existing fog light wiring, or do I need a new harness?

These come with their own independent switch and harness, so you're not tapping into factory circuits. Run the included harness to a clean power source and ground — that's the cleanest approach for reliable switching and protects your factory electrical.

Do the smoked lenses affect how bright these actually are?

The tint is integrated into the lens design and doesn't compromise output — these are high-powered LEDs rated for that finish. You get the aesthetic without sacrificing visibility.

What if I need to return these after install?

Test-fit them in the factory openings before wiring anything permanent. Once you confirm fitment and operation, you're set — but make sure they sit flush and the switch mounts cleanly before you're committed.