The unlit margin (35) of a first EL lamp (32) is covered by the lit edge (36) of a second EL lamp (31) to provide a substantially seamless lit area. The lamps are joined mechanically. The EL lamps are connected in parallel electrically by conductive tape overlying at least a portion of the bus bars of the lamps. A plurality of lamps can be joined together to provide an EL lamp substantially larger than obtainable by other means.
