A tubular electro-luminescent light includes an inner member around which an electro-luminescent panel having electrodes is coiled, and at least one additional wire connected between ends of the light for carrying electric signals related to the function of an external device. The external device may be an audio, video, or communications device, or a power supply for a household appliance or the like, and the electric signals carried by the additional wire, or sensors, may be used to trigger the light. For example, the external device may connect an ear-phone set of a cellular telephone, the device being arranged in a loop to be worn around a body part of the user, a handbag, or the like, and the light being triggered by electric signals indicative of an incoming telephone call.