Unique plug-in adapter design allows installation without cutting or splicing existing wiring Mounts on one 1/2'' - 13 stud DRL kit includes a switch and a heavy-duty flasher Not compatible with vehicles using quad headlamp or separate DRL headlamps High impact polycarbonate and steel construction Adapts easily to vehicle equipped with Daytime Running Light (DRL) systems Normal DRL function transferred to snow plow lights Wiring system features weatherproof Packard connectors to prevent corrosion problems Use matrix to determine appropriate adapter plug kit, sold separately Features high/low beam halogen headlamps and integrated park/turn lamps