Yes and No. Since most vehicle’s daytime running lights operate at roughly 6v and HID lights require a 12v current, they will not operate correctly (without the use of a relay harness). In many cases, especially for those cars that have Auto “ON” or Daytime Running Lights; one or both lights cannot ignite. If you purchase a relay harness, it allows the daytime running lights to pull the extra 6 volts needed, allowing HIDs to properly function with daytime running lights.
– If you have Daytime Running Lights please follow your cars service manual; disconnect the fuse or wiring of Daytime Running lights only.
– If you have Auto On Headlights, please switch the function to Manual Switch On headlights. You will also need a relay harness. Always remember to start your engine before turning on your HID system!