Mercury – DTS Command Module Harness (Shadow Mode Triple) | Command Module Wiring | 84-896377T02

Overview
This harness connects the command module into a triple-engine DTS setup running Shadow Mode. It’s the updated replacement for 84-896377A01, so it drops right into rigs using 2007-and-newer Gen I DTS engines. The wiring run ends up cleaner and steadier, which helps Shadow Mode feel smooth instead of touchy. It’s a quick swap that keeps the control system behaving the way it should.

Key Features
    • Command Module Harness – Provides the wiring path for DTS command module connections.
    • Shadow Mode Triple – Built for three-engine Shadow Mode setups.
    • Direct Replacement – Updated OEM version of 84-896377A01.
    • Gen I DTS Ready – Fits 2007-and-newer DTS engines.
    • OEM Connectors – Factory plugs that lock in tight.

Engine & Boat Compatibility
    • Digital Throttle and Shift Gen I
    • Triple engine
    • Shadow Mode systems

Performance & Practical Benefits
A fresh harness keeps Shadow Mode from feeling jumpy or out of sync when you’re on the throttle. Commands pass cleanly across all three engines, and the system doesn’t get confused by worn connectors or patched wiring. Service work is easier too, since the harness follows a simple, predictable path. It’s one of those parts that helps a busy DTS setup feel more settled.

Why Buy OEM
OEM wiring holds up to vibration, heat, and salt spray, and the connectors match Mercury’s layout exactly. That means fewer weird glitches and steadier control when the water gets rough. It’s reliable gear you can trust long-term.

FAQ
Q1: How do I know this is the right harness?
A: If your boat has three Gen I DTS engines running Shadow Mode, this is the harness that belongs there.

Q2: Does it replace the older A01 harness?
A: Yep—this is the direct OEM replacement for 84-896377A01.

Q3: Any calibration after installation?
A: No—DTS checks itself once everything’s plugged in.

Q4: How does it handle saltwater?
A: Fine, just rinse the area now and then and check the plugs.

Q5: What are signs your old harness was failing?
A: Sluggish Shadow Mode response, random dropouts, or intermittent shifting.