The Rolls-Royce Wraith high beam and low beam headlight bulbs both utilize a D1S size. The replacement chart covers 2014 to 2016 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The D1S bulb is the sole bulb type specified across all listed model years of the Rolls-Royce Wraith, covering both high beam and low beam headlight positions for 2014-2016.
D1S is a High-Intensity Discharge (HID) xenon bulb, meaning it produces light through an electrical arc between tungsten electrodes within a xenon gas-filled quartz capsule, rather than through a heated filament.
The bulb operates at 85 volts and 35 watts, a voltage level significantly higher than standard automotive bulbs, which requires a dedicated ballast to regulate power delivery.
The D1S bulb features an integral ignitor built directly into the bulb unit, distinguishing it from D2S and other HID variants where the ignitor is a separate component housed in the ballast.
The PK32d-2 base is specific to the D1S standard and is not interchangeable with the PK32d-3 base found on D3S bulbs, meaning substitution between these types is not physically possible without modification.
The D1S designation conforms to ECE (Economic Commission for Europe) regulations, a certification framework recognized across Europe and numerous other markets worldwide.
D1S bulbs are designed exclusively for projector-type headlight housings, which use a lens and reflector system to focus and cut off the light beam precisely, as opposed to reflector-type housings.