Mercury – Auxiliary Trim Harness | Secondary Trim Connection | 84-895388T02

Overview
This auxiliary trim harness lets you hook up trim wiring for a helm-mounted trim lever or any secondary trim control you want to add. It’s made for DTS boats running panel-mount controls and gives you a clean, reliable way to bring an extra trim input into the system. If you want more convenient trim access—or a second trim point for the helm—this harness makes the wiring simple and straightforward.

Key Features
    • Auxiliary Trim Harness – Provides the wiring path for an additional trim control.
    • Supports Secondary Trim Devices – Works with helm levers or other trim inputs.
    • Panel-Mount DTS Use – Built for boats using panel-mount DTS remote controls.
    • OEM Connectors – Factory ends that snap in tight and stay secure.
    • Clean Integration – Helps keep the helm wiring organized.

Engine & Boat Compatibility
    • Digital Throttle and Shift
    • 2004 and newer DTS engines
    • Panel-mount remote control systems

Performance & Practical Benefits
Adding a second trim point makes the boat easier to balance when the water changes or when you want trim control closer to hand. This harness keeps the wiring clean so the trim signal stays steady instead of feeling jumpy or inconsistent. It also makes later service easier since the wiring route is simple and well-labeled instead of patched together.

Why Buy OEM
OEM harnesses plug in exactly the way Mercury designed, which means fewer surprises and far fewer trim glitches. The wiring holds up well in heat, vibration, and spray, and the connectors stay tight over time.

FAQ
Q1: How do I know I need this harness?
A: If you’re adding a helm trim lever or an extra trim switch on a DTS boat with panel-mount controls, this is the harness that ties it in.

Q2: Any calibration needed after installation?
A: No—just plug it in and the system recognizes the input.

Q3: Is it safe for saltwater use?
A: Yes—just rinse occasionally and keep the connector clean.

Q4: Any installation tips?
A: Route it with smooth bends so the wire isn’t pinched behind the panel.

Q5: What are early signs of wear?
A: Slow or uneven trim response, intermittent operation, or visible jacket rubbing.