The other day my right HID went out. I ordered a pair of bulbs from DDM, and installed the right one to start with. No light. So I tried the other bulb, and still nothing. So I tried the working factory bulb from the left side, and STILL nothing. Not knowing where the ballast was or what voltage to even look for I remembered KISS (keep it simple stupid). I've never seen a car with independent left and right headlight fuses, but then again, I've never had HID's. Low and behold, there are not only independent left and right low beam fuses, in the cabin panel, but also a high beam fuse and another set of left and right low beam HID fuses under the hood. The 20 amp under hood for the right side was blown and the factory takes outs are now my spare back up bulbs. Lesson learned.