Mercury – Quad Engine Trim Harness Kit (DTS) | Multi-Engine Trim Wiring | 84-895744A04

Overview
This 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 Harness – Routes trim signals to all four DTS engines.
• Zero Effort Ready – Includes the components needed for ZEC trim integration.
• Organized Layout – Reduces clutter and keeps the wiring easy to trace.
• OEM Connectors – Factory plugs that snap in tight and stay secure.
• Complete Kit – Everything needed for a proper four-engine trim hookup.

Engine & Boat Compatibility
• Digital Throttle and Shift
• Quad engine
• Zero Effort Controls

Performance & Practical Benefits
With the trim harness set up correctly, all four engines respond together instead of lagging or trimming unevenly. That makes balancing the boat at speed or in chop a lot easier. It also keeps the wiring behind the helm cleaner, which helps when you’re doing maintenance or chasing down an issue. The system simply feels more predictable when everything is tied in the right way.

Why Buy OEM
OEM harnesses follow Mercury’s wiring layout exactly, hold up to vibration and spray, and keep the trim signals steady. No loose connectors, no odd timing issues, and far fewer surprises later.

FAQ
Q1: How do I know this is the right kit?
A: If you’re rigging four DTS engines with Zero Effort Controls, this is the kit Mercury designed for that setup.

Q2: Any calibration needed after installation?
A: Nope—plug everything in and the DTS system handles its own checks.

Q3: How does it handle saltwater?
A: Very well. Just rinse occasionally and check the connectors.

Q4: Any install tips?
A: Give the harness smooth bends and leave a bit of slack so nothing gets stressed.

Q5: What are early signs of a harness issue?
A: Uneven trim movement, one engine lagging behind the others, or a connector that feels loose.