194 Type 3-Watt High Power L.E.D. Bulb. 6 L.E.Ds on Each Bulb. These special 3-Watt T-Shaped LED bulbs replace the halogen 194-style bulbs in all factory installed cab roof lights on all 1999-2016 Ford Superduty F250 F350 F450 F550 & F650 Trucks & all Ford Excursion SUVs & are also a great upgrade when adding RECON smoked, clear, or super white lenses to any existing factory installed OEM Ford cab roof light set.