Unity (330GM) 6" Diameter x 100W Post-Mount/Door-Mount Spotlight with Chrome Head for Ford/Chevrolet Tightly controlled 100 watt, 245,000 candlepower beam 360 degree horizontal and 180 degree vertical rotation Works only on driver side or passenger side post of 2004-2014 Ford F150 and driver side or passenger side door of 2007-2013 Chevrolet Silverado 2004-2014 Ford F150 Requires 184RH installation kit for driver side or 184 installation kit for passenger side to mount 2007-2013 Chevrolet Silverado Requires 254 installation kit for driver side or 254RH installation kit for passenger side to mount