a reflective coating is applied to the front face of the housing including the reflector 16 and exterior surfaces of the sockets 20 and 22 to provide an optically efficient reflective surface the flanged panel 18 of the reflector housing includes four orifices 24 disposed at corner locations the orifices 24 are dimensioned and positioned to receive tubular projections 26 which extend inwardly from the lens 14 each tubular projection 26 comprises a first enlarged diameter portion 28 and a second reduced diameter portion 30 which are integrally joined to define an intermediate annular shoulder 32 upon mounting of the lens each shoulder 32 lies in flush relationship against the surface of flange panel 18 and the reduced diameter portion 28 is received within one of the orifices 24 each tubular projection defines a bore 34 for receiving a mounting fastener 35 for securing the lens to the housing and the warning light 10 to the vehicle the lens 14 has a convex face 40 and a substantially rounded rectangular peripheral shoulder 42 which is provided with a rearwardly extending lip 44 the lip 44 cooperates with the shoulder 42 to define a peripheral recess 46 the recess 46 receives a complementary peripheral lip 48 provided on the flange panel 18 of the reflector housing 12 to seat the lens onto the housing the tubular projections 26 are integrally molded to the convex face 40 so as to define the four rearwardly longitudinally extending bores 34 the reflector housing 12 and the lens 14 are in accordance with a preferred embodiment.