Mercury - CAN Data Harness (10-Pin, One Resistor, Non-DTS) 25-Foot SmartCraft Lead 84-879981T25. Overview. Some SmartCraft CAN P networks need both a long routing run and proper termination built directly into the harness. The Mercury 84-879981T25 CAN Data Harness delivers twenty-five feet of blue-connector SmartCraft cable with a single integrated resistor, giving the network the correct load on one end while providing the reach needed for wider helms, deep consoles, or long rigging corridors.