1999-2006 GMC YUKON DENALI CCFL HALO PROJECTOR HEADLIGHTS + LED FOG BUMPER LAMPS This Item Is For 2000-2006 GMC YUKON DENALI (DOES NOT FIT YUKON XL OR SLT MODEL)***2001-2006 GMC YUKON DENALI XL***2001 GMC SIERRA C3 (DOES NOT FIT REGULAR SIERRA MODEL)***2002-2006 GMC SIERRA DENALI Headlight Comes With 9006 Light Bulb On Low Beam, High Beam Does Not Included Any Light Bulb, Please Apply 9005 Light Bulb Installation Instruction and Wiring Diagram is not available. Professional Installation Highly Recommended Come With DRL Fog Bumper Led Light = daytime running light which produces a LED strip similiar to latest European car style (8 LED Light Per Side) Wiring for These DRL is Required and Simple, You Can Wire These DRL as Backup Lights, Daytime Lights, Parking Lights, Fog Lights, or even Signal Lights