Mercury - CAN Data Harness (10-Pin, One Resistor) 10-Foot SmartCraft Lead 84-879980T10. Overview. Some SmartCraft networks need both extra length and proper termination built into the harness. The Mercury 84-879980T10 CAN Data Harness provides ten feet of SmartCraft cable with a single integrated resistor, making it useful for layouts where one end of the backbone needs a clean, built-in termination point. It carries CAN P, CAN X, and CAN H through the standard yellow 10-pin connector, keeping c