Review on Enhance your Chevy Silverado 1500 with LED Fog Light and DRL Compatibility - 2019-2021 Bumper Driving Lamps with H11 Relay Harness Kit by Andrew Aldana

They are supplied without wiring. You'll need to buy some H11 connectors - https://www.amazon.com/gp/product/B06XZL798Z/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 I think they're internally wired backwards, or at least mine is where and I had to connect the red wire to ground and the black wire to 12V+ to turn on the center main light. And the white wire needs 12V+ to turn on the external DRL LEDs. They consume very little current, the internal LED is 0.68A and the external LED is 0.46A. Therefore, no relay and no dedicated power cable is required. Just plug them into the wires that go to the headlights.