Rxmotoring 2001-2006 Gmc Yukon Denali Fog Light + 8 Led Bumper Lamps This Item Is For 2001-2006 GMC Yukon Denali (will not fit Yukon XL or SLT), Will also fit 01-06 Yukon Denali XL and 02-06 GMC Sierra Denali. Projector Fog Light Come With Wiring Harness/Switch/Relay Installation Guide / Wiring Diagarm is not Available. ***PROFESSIONAL INSTALLATION HIGHLY RECOMMENDED*** Come With daytime running light (DRL) 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