Do these require any wiring modifications?

These are direct replacements that bolt to factory mounting points. Your existing harness connects straight in — no rewiring needed.

Will I need new gaskets or seals when I install them?

Mounting hardware and sealing details aren't specified in the product data — test-fit before committing to new gaskets so you know what you're working with.

What's the best way to remove the old lights?

Refer to your vehicle's service manual for removal procedure and any torque specs — every model has its own access points and fastener layout.