Mercury – Dual Engine Mechanical J-Box Adapter Harness | Racing CAN P Link | 84-892323A10Mercury Dual Engine Mechanical J Box Adapter Harness Racing CAN P Link 84 892323A10 Overview High performance rigs need wiring that keeps up with the way theyre driven. The Mercury 84 892323A10 Dual Engine Mechanical J Box Adapter Harness brings order and stability to racing setups that rely on mechanical controls. Built with an integrated CAN P link and diode protection, it ties two engines cleanly into the SmartCraft backbone through a racing 14 pin