An L.E.D. lamp assembly providing a range of articulation between a lamp housing and a lamp is disclosed herein. The lighting system includes a lamp having an LED array, and a bell-shaped lamp housing having a threaded electrical connector attachable to a light socket, and an articulation mechanism. The articulation mechanism includes a pair of pivot arms attached to the lamp which ride within a channel attached to the lamp housing. By operation of the articulation mechanism, the L.E.D. lamp rotates on two axes; one parallel to the adapter's socket and one diametric to the circular edge of the adapter. The lighting system allows the L.E.D. lamp to be directed at various angles of a user's choice across a wall or ceiling when retrofitted into a light fixture.