This SAE Standard references the performance and functional requirements of the International Electrotechnical Commission (IEC) and its U.S. member, the American National Standards Institute (ANSI). By referring to IEC/ANSI and its standards concerning light source (bulb) sockets, light source (lamp) holders, and gages, this document recognizes the need for harmonized standards world-wide for what are typically commodity items. Additional requirements are noted.