My 2006 Silverado seems to be having headlight issues. I was driving last night, and all of a sudden my headlights went out, both at the same time. The high beams DO works, so thats what I used to drive home. Both Low Beam Headlights fuses in the under-hood fuse box were blown, so I replaced them, and I turned the lights on, and nothing. Checked the fuses again and they were blown again. I got the test light out and started checking things. there is no power to the factory harness (I say that because it takes the whole plow harness out of the mix). I DO, however, have power at hot side of each fuse. I figured if I made a small, temporary jumper wire to replace the fuse, that would tell me that something keeps blowing the fuse. That didnt work. I pulled the relay for the headlights, and checked each pin with the test light and NO power there. I recently install a set of HID headlights about 3 weeks ago, but they have been working flawlessly the whole time so I don't really see how that could have anything to do with it. But for the hell of it, I pulled those out and out the factory bulbs back in and replaced the fuses once again, and they still blew out right away. I DO have a Boss plow on the the truck, however I did check and everything is working properly with that. The factory headlight harness has to plug into the plow harness which then plugs into the headlight bulb itself. As I said I'm not even getting anything at the vehicle plug, so its not even getting to the plow harness. I am completely stumped. What else is between the fuse and the plug that could be the problem, and causing the fuses to constantly blow?