These Original Equipment replacement flashers feature integrated circuit controlled reliability and most have built-in lamp outage indicators. Nearly all modern cars and light trucks now come equipped with Electronic flashers. 12 Volt Alternating FlasherSocket Mountable Precise Square Wave I.C. Controller High Temperature Plastic Enclosure Standard 3 Terminal I.S.O. Pin-out Solid State Relay Driver Technology Highest O.E.M. Quality Printed Circuit Board Materials Quality and Durability Equal to O.E.M. Products POLICE VEHICLE FLASHER APPLICATIONSHead Lamp "Wig/Wag"Light Bars, Running Lights, Deck Lights, Grill Lights6 Lamps Per Side, Maximum of 160 Watts Per SideAll Vehicle Alternating Lights Controlled by One Flasher Design Life: 400 Hours