A headlamp assembly for a vehicle, comprising: a housing for coupling the headlamp assembly to a vehicle, the housing including an inner surface defined by a reflector; a planar heat sink structure having a first surface, a second surface, a housing abutting edge and a substantially straight edge, the housing abutting edge being adapted to abut an inner surface of the housing, wherein the heat sink structure is adapted to separate the housing into first and second sections; a circuit board supported by the second surface of the heat sink structure, the circuit board being positioned near the substantially straight edge of the heat sink structure; a first light emitting diode being supported by the first surface of the heat sink structure and being electrically connected to the circuit board, the first light emitting diode lying in substantially the same plane as the first surface of the heat sink, and a second light emitting diode being supported by the second surface of the heat sink structure and being electrically connected to the circuit board, the second light emitting diode being positioned between the housing abutting edge of the heat sink structure and the circuit board, wherein the circuit board and the second light emitting diode each lie in substantially the same plane as the second surface of the heat sink structure and do not overlap.