Do these lights require any modification to the bumper or fascia?

Test-fit before committing to installation. Mounting points should align with factory fog light cavities, but verify fitment on your vehicle before drilling or using adhesive.

Are bulbs included, or do I need to buy them separately?

The kit includes the light assemblies and switch. Confirm bulb specifications with your vehicle manual or contact support if bulbs are not pre-installed.

Can I wire this directly to my existing electrical system without additional relays?

The harness is designed for plug-and-play installation. Refer to your vehicle's service manual to verify connection points match your Civic's electrical layout before finalizing connections.