The Intelli-Tank Driver module utilizes the 1-wire data line to receive tank level information from a Master 4 light tank level display and then mimics the Master’s display with its high current outputs. The module also incorporates an auto-refill function that, when activated, turns on the fill output at less than ¾ tank level and turns it off when the tank reaches the FULL point. An alarm output activates when tank level reaches ¼ or if data from the Master is lost for over 10 seconds.