the embodiment disclosed herein relates to a lighting system that includes an auxiliary lighting circuit for use with an electronic hid ballast . the lighting system comprises a power supply configured to provide power to a high intensity discharge lamp via an electronic ballast and a ballast power sensing component configured to determine the amount of power drawn by the electronic ballast and to convert this power drawn by the electronic ballast to a scaled voltage that is representative of the power drawn by an hid ballast . a lamp driver component is configured to provide power to an auxiliary lamp via the same power supply when the scaled voltage reaches a triggering threshold . a voltage regulation component is configured to regulate the power delivered to the auxiliary lamp such that the auxiliary lamp power stays within a predefined range .