JEGS High Beam Headlight Conversion Kit changes the way the headlights work on Late Model GM trucks & SUV's. These trucks have 4 headlights, but only two are on at a time (low beams or high beams). Once installed, this kit keeps the low beams on in the high beam mode (for better visibility and spread pattern). Fits all 1999-2006 GM full size trucks & SUV's (with 4 headlights) and are compatible with the factory installed daytime running lamp feature. Does not fit S-10, S-15, Colorado, Trailblazer & Traverse. .