Mercury - CAN Data Harness (10-Pin, No Resistors, Non-DTS) 30-Foot SmartCraft Lead 84-879968T30. Overview. Large helms, flybridge layouts, and deep rigging channels often need a long, clean SmartCraft extension to keep the data line routed naturally. The Mercury 84-879968T30 CAN Data Harness gives you thirty feet of non-terminated SmartCraft cable using the blue 10-pin connector, built specifically for CAN P networks that do not use DTS. With no added branches or extra circuits, it provides a si