Mercury - Quad Engine Trim Harness Kit (DTS) Multi-Engine Trim Wiring 84-895744A04. OverviewThis kit gives quad-engine DTS rigs the proper wiring to link the trim switches and Zero Effort Controls together. Instead of patching wires or mixing older harness pieces, this setup brings all four engines into one clean trim circuit. It keeps the system steady, makes the rigging easier to understand, and helps the engines respond together the way they're supposed to.. Key Features • Quad-Engine Trim Ha