Installing Fog Lights on a Base Model 1999 GMC Sierra 1500

Therefore, before even purchasing fog lights, restore or replace your headlight assemblies. A proper headlight restoration using a wet-sanding kit and UV-blocking sealant can bring back 90 percent of original clarity. With clear headlights providing a strong, wide low-beam pattern, fog lights can then fulfill their intended role: casting a low, wide beam that illuminates the road immediately in front of the truck and the shoulder edges, cutting underneath fog and rain without creating glare. Do not skip this step—clear headlights are the foundation upon which effective fog lighting is built.
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