Roadsun HID Headlights 35W D2S 6000K 8000K HID Xenon Bulb For BMW 3 Series E46 1999-2006 E39 E60 E61 E63 E64 E38 E83 E53 E85 E86 Product Advantages: Low power consumption and long lifespan Waterproof and dustproof HID Simple to install Enhance driving safety Color temperature: 6000K White / 8000K Ice Blue Power: 35W/pcs Type: D2S Working Temperature: -40 - +80 Package Included: 2PCS headlight bulbs Only Packing 2PCS Bulbs in one box. Not included ballast Not included connect wire. Fits For BMW For BMW 3 Series E46 1999-2006 For BMW 5 Series E39 1999-2003 For BMW 5 Series E60 E61 2004-2009 For BMW 6 Series E63 E64 2003-2007 For BMW 7 Series E65 E66 1999--2005 For BMW 7 Series E38 1995-2001 For BMW X3 E83 2003-2006 For BMW X5 E53 2004-2006 For BMW X5 E53 1999-2003 For BMW Z4 E85 E86 2002-2008 For BMW M3 E46 1999-2001 For BMW M3 E46 2002-2006 For BMW M5 E39 1998-2003 For BMW M5 E60 E61 2005-2010 For BMW M6 E63 E64 2005-2010 Only Replace HID Xenon D2S *This Is Not Hid Kit, If You Use Halogen Bulb Want Upgrade Hid Get Aftermarket Hid Kit, This Will Not Fit. *When upgrading the original car with HID light source, make sure the original car HID ballast works normally; *This product can only replace HID Headlight bulbs. Direct Replacement bulb for D2S application (fully compatible as long as your current bulb is 'D2S' type. Question 1: One side could not work? 1)please turn around the plug (swap the polarity) of the defective bulb and try again 2)please exchange the bulbs from side to side and see if the problem could solve 3)Please check your connection and fuse 4)If still could not help, please contact our customer service, we will get back to you within 24 working hours Question 2: Both side could not work? Please turn around the plug (swap the polarity) and try again.