Mercury - CAN Data Harness (10-Pin, No Resistors) 4-Foot DTS Lead 84-879312T47. Overview. Some DTS setups need a bit more reach than the short factory leads allow, especially when modules sit on opposite sides of the helm or deeper in the console. The Mercury 84-879312T47 CAN Data Harness adds four feet of non-terminated SmartCraft length, giving you a clean, stable connection for CAN 1, CAN 2, and CAN 3 without altering the network's existing termination. It's a simple way to get better routing