Do I need to cut into my factory wiring or use a relay?

No. The harness connects directly to the switch, and the switch taps into existing power points without splicing the main loom. Everything runs through the included connector system.

Will these mount to the factory fog light holes, or do I need to drill?

They mount at factory locations using existing anchor points. No drilling or frame modification needed.

What if I need to return these—what's the process?

Contact ModSupply support with your order number and reason. Standard return window applies; items must be unused and in original packaging.