Just so everyone knows that its not our trucks that are wired up wrong or is different than any other vehicle. A 9007 bulb has to be wired correctly to work right. This kit that I bought was for a 9004 AND 9007. Anybody who has any automotive electrical experience knows that a 9007 bulb grounds through the center terminal and voltage for high and low beam are on the outside wires. The 9004 bulb, which has the same connector, is wired differently. My kit had to have been wired for 9004. Heres a diagram.