Will these plug directly into my existing fog light wiring?

The included switch gives you independent control, so you'll want to wire it into a clean power source rather than splice into your original harness. This gives you the option to run fogs separately from your main lights.

Do I need to modify the bumper or housing to fit these?

These mount at factory fog light points — no drilling or fabrication required. Check fitment against your specific year before ordering.

What's the warranty on the LEDs?

Warranty details aren't specified in the product listing — reach out to confirm coverage and return window before purchase.