Lighting system mountable on a surface and including one or more miniature light sources and a multi-part housing including recesses for accepting the light sources and an electrical supply line. The light sources can include light emitting diodes. Separate parts of the housing are mated in a manner to fix the position of the electrical supply line between them, and may be formed with a recess that receives an asymmetrically shaped electrical supply line in only one possible orientation. Similarly, the recesses receiving the light sources may be shaped such that electrical connections with proper polarity are assured. Either or both parts of the housing may be fastened to the surface with adhesives and/or optional holes for receiving pins, nails, screws, bolts or the like. The lighting system is particularly suitable for emergency, railing, landscape and vehicle illumination applications, and may be powered by batteries and renewable energy sources.