A light fixture monitoring/control system/method allowing a lamp associated with a lighting fixture to be controlled in response to localized lighting fixture sensor inputs and/or remote wireless commands is disclosed. The system utilizes a light fixture adapter (LFA) as a dimming control and monitoring interface between a light fixture and the lamp installed in the LFA. Dimming control is directed by a computing device based on a LFA program (LFAP) that analyzes information from one or more sensors integrated within the LFA. The LFA supports a web-based browser interface and a wireless communication link allowing remote users to define the LFAP and/or directly control lamp dimming and/or access data from LFA sensors. The LFA permits low-cost retrofitting of existing light fixtures with “smart” networked lighting controls that may incorporate advanced spatially diverse security monitoring functions including audio and/or video surveillance.