FOXCID Hide A Way 160 Watt HID Emergency Hazard Warning Headlight Strobe Light Kit System For Vehicle Truck (8 HID Bulbs) Designed for reliability and high performance, with 8 grommet style strobe bulbs that are encapsulated in silicon for moisture protection and to protect against road vibration Bulbs have a rubber grommet base, designed to easily install into a 1 inch hole, which is drilled into each headlight, front side marker and taillight assembly The power supply, 8004-PS is heavy-duty, with an operating voltage of 12-24 VDC and has 8 outlets producing 160-watts of output power Six advanced flash patterns to choose from, which are controlled with the touch of a button from the control panel provided Engineered with a state-of-the-art field proven microprocessor, to provide years of dependable service