This is the third issue of the Outline of Investigation for Light Emitting Diode (LED) Light Sources For Use In Lighting Products. The outline covers the component parts of a light emitting diode (LED) light source such as LED modules, LED Arrays, power sources and control circuitry. It covers LED light sources that are produced by the end use product manufacturer, and that are an integral part of the end use product, or discrete component parts of an LED light source produced by one manufacturer for use in another manufacturer’s lighting product.