The invention relates to a flexible light engine with bus bars and interconnectors, and specifically discloses a flexible light engine comprising insulating lower and upper laminate sheets; first andsecond electrically conductive metallic bus bars between the sheets; a plurality of electrically conductive metallic conductors between the sheets being disposed laterally between the bus bars, wherein each conductor defines two metallic contacts exposed in register with adjacent perforations in the perforated upper sheet; wherein each of the bus bars further comprises respective at least two interconnectors, and wherein the conductors are connected to respective interconnectors to define at least two series circuits and connectable in parallel between the bus bars, wherein each of the seriescircuits comprises a subset of the plurality of metallic conductors; and a plurality of LEDs attached to the contacts defining at least two series LED strings and connected in parallel between the busbars, each said LED string comprising a plurality of LEDs.