Mercury - CAN Data Harness (10-Pin, One Resistor, Non-DTS) 50-Foot SmartCraft Lead 84-879981T50. Overview. Large offshore boats, flybridge layouts, and long-distance rigging runs often need far more cable than the standard SmartCraft harness provides. The Mercury 84-879981T50 CAN Data Harness delivers fifty feet of non-DTS SmartCraft wiring with a single integrated resistor, giving the network both the reach it needs and the proper termination on one end. It keeps the wiring simple, stable, and