03-07 Cadillac CTS D1C (w/ Stock D1S HID) Headlight Light Bulbs Diamond White 6000K One Brand New PAIR (Set of 2) of D1C D1R D1S Xenon Diamond White HID Replacement Light Bulbs (6000K) 6000K Color Temperature (Diamond White) 35W These light bulbs are for the Low Beam headlamps. Direct upgrade replacement of OEM HID Light Bulbs. Easy Installation (Just plug in and replace stock light bulbs) No Need to Change Any Wire!! No Modification needed!! Vehicle Application: Cadillac 2003 2004 2005 2006 2007 CTS With stock HID headlamps only