Wolo (8504-10CCCC) NexGen 40 Watt Power Supply Gen 3 LED Emergency Warning Four Head Kit - 4 Clear LED Heads 4 Clear LED heads Designed for easy installation into a vehicles composite headlights and taillights The power supply has a state-of-the-art microprocessor, field proven to provide years of dependable service Fifteen advanced flash patterns to choose from, with the touch of a button on the control panel provided Each LED head has eight omni-directional 1 watt GEN 3 LEDs that are encapsulated for moisture and road vibration protection