How to Add Factory-Style Fog Lights to a 2005 GMC Sierra 1500 uberant.com

After completing the wiring, reconnect the battery and test the system. Turn your headlight low beams on, then press the fog light switch. The new lights should illuminate. Switch to high beams—the fog lights should turn off automatically. Aim the lights using the adjustment screws on each housing so the beam pattern hits the road about 20 to 30 feet in front of the truck. Finally, seal all wire connections and enjoy your new factory-style fog lights. With proper installation and correct integration with your headlight system, your 2005 GMC Sierra 1500 will look sharper, drive safer in bad weather, and retain a completely original appearance.