Abstract: A flexible liquid tight marker light that comprises a light source encapsulated by injection molding a light transmitting elastomeric polymer to form a protective casing which further includes an imbedded wiring harness electrically connected to said light source and imbedded structural members that protect the light source from excessive flexing and impacts. The wiring harness and structural members provide heat sink means for the light source. The casing is comprised of variable durometer tinted polyurethane elastomers with light diffusing pigments added. Diverging optics are molded into the casing outer surface.