This is a A-HL300R Headlamp Assembly (12 Volt) PN: HL300RMain Description As Following : A-HL300R Headlamp Assembly (12 Volt) P.N: HL300R Dim A (1): 6" DiameterDim B (2): Red Enamel Steel BodyDim C (3): 4 Wires: Black - Ground, Red - Bright, Yellow - Dim, White - ParkingDim D (4): Not Necessary To Use All Wires If Not Needed. For Basic Work Light Use Black & Red Wires Only. Found in Section & Models : Lights & Related Parts > Headlamps, Massey Ferguson TRACTOR: SEVERAL Associated Items : A-47P1831 Also This is An Aftermarket Product And : Dim A (1): 6" Diameter Dim B (2): Red Enamel Steel Body Dim C (3): 4 Wires: Black - Ground, Red - Bright, Yellow - Dim, White - Parking Dim D (4): Not Necessary To Use All Wires If Not Needed. For Basic Work Light Use Black & Red Wires Only.