Ok everyone, I have an unusual one for ya all.. I have my 2012 Silverado with 5,000 miles on it. The other night while driving home, I had to use my horn. When I hit my horn, I realized my headlights cut off (for less than a second, but it was still noticeable). When I got home, I started hitting my horn again, and I found that something is randomly cutting off my headlights when I hit my horn. It doesn't always happen; I'd say it happens 1 out of 10 times I hit the horn. Does nothing to my fog lights, it's only screwing up both of my headlights. I'd love to take it to the dealer, but I have HID's on my headlights and fog lights and I'm sure they will blame the HID system. (Even though it uses all the stock wiring, and has no other wiring other than connecting into the stock plug). I might try this to throw in the stock bulbs and see if I get the same results.. Has anyone heard of this before?