Mercury - CAN Data Harness (10-Pin, No Resistors) 10-Foot SmartCraft Lead 84-879969T10. Overview. Longer SmartCraft runs sometimes need a clean stretch of cable without extra components in the way. The Mercury 84-879969T10 CAN Data Harness gives you ten feet of non-terminated SmartCraft wiring, carrying CAN P, CAN X, and CAN H signals through the standard yellow 10-pin connector. It's made for systems that already have proper termination elsewhere and just need a solid, OEM-quality link with mor