Mercury - CAN Data Harness (10-Pin, No Resistors, Non-DTS) 6-Foot SmartCraft Lead 84-879968T6. Overview. Some SmartCraft CAN P networks only need a clean, simple extension-nothing extra, no added circuits, and no built-in termination. The Mercury 84-879968T6 CAN Data Harness fits that role perfectly. It provides six feet of straightforward, non-terminated SmartCraft cable using the blue 10-pin connector, giving you enough length to route the data line naturally through tighter helm areas or shor