Do these plug straight into the factory fog wiring?

Yes. These are designed as direct replacements for the OEM fog housing. You're swapping the entire assembly into the existing mounting points—no splicing or harness work needed.

Will the smoke lens dim the light output?

The tint is aesthetic. LED output is bright enough to cut through fog and rain; the smoke finish gives you the look without compromising visibility. If maximum output in low light is your priority, test them in your conditions first.

What if one LED fails after I install them?

Return process details are handled at checkout. Keep your receipt and contact support with photos if a unit fails prematurely.