Showing all 5 results 2 Wire Optic Sensor Liquid Level Sensor for Tank Trailer Overfill Prevention Conductor Cable 7 & 11 Sensor Conductor Front Plate Assembly – 10 Pin Scully Sockets are part of a complete vehicle mounted overall prevention and grounding system. Ground Ball For independent grounding where no Scully overfill prevention system is in use Ground Bolt For static grounding connected through a Scully Overfill Prevention Control System