Mercury - CAN Data Harness (10-Pin, No Resistors) 40-Foot SmartCraft Lead 84-8M0166624. Overview. Extra-long boats, flybridge layouts, and deep rigging corridors often need far more SmartCraft cable than standard harnesses provide. The Mercury 84-8M0166624 CAN Data Harness adds a full forty feet of non-terminated SmartCraft wiring, giving you the reach to run CAN P, CAN X, and CAN H cleanly from helm to rigging-even across multi-level or wide-beam layouts. It keeps the network organized, avoids