Mercury – Analog Gauge Harness | DTS Engine Link | 84-8M0150539

Overview
This 3-foot analog gauge harness plugs straight into the engine’s 4-pin lead and feeds the basics—trim, coolant temp, oil pressure, and tach. It’s short, clean, and meant for simple dash hookups without extra adapters or long wiring runs. On the water, it helps those gauges read steady and cuts out a lot of the flicker or dropouts you get with tired wiring. Easy hook-up, easy routing, and built for modern DTS engines.

Key Features
    • Short 3 ft Harness – Ideal for tidy, close-range routing.
    • 4-Pin Engine Connection – Direct plug into the engine harness.
    • Analog Gauge Outputs – Trim, coolant temp, oil PSI, and tach.
    • OEM Wiring Pattern – Matches Mercury’s color codes and pin layout.
    • Flexible Marine Jacket – Handles vibration, heat, and spray.

Engine & Boat Compatibility
    • DTS outboards
    • DTS V6 / V8 outboards
    • DTS MCM 4.5L
    • DTS MCM 6.2L

Performance & Practical Benefits
This harness keeps the analog gauges steady by giving them a clean, short signal path. Trim and tach react smoothly, and pressure/temperature gauges stop bouncing around from wiring noise. It’s a quick way to clean up the dash if you’re replacing an old harness or adding gauges to a DTS engine for the first time.

Why Buy OEM
OEM wiring fits tight, seals well, and follows Mercury’s exact pinout—no guesswork, no odd gauge behavior, no cheap connectors backing out. It’s built to hold up to engine vibration and heat, which is something off-brand harnesses don’t always handle well.

FAQ
1. How do I know this is the right harness?
If your DTS engine has a 4-pin analog gauge lead, this is the correct plug-in harness.

2. Does it support digital gauges?
No—this is strictly for analog trim, tach, temp, and oil PSI.

3. Is the 3 ft length enough?
It’s meant for short, clean runs near the engine—extensions can be added if needed.

4. Any special tools needed?
No—plug it in, route it neatly, and connect the gauges.

5. What happens when an old harness fails?
Gauges jump, drop out, or read low because the signal gets noisy or intermittent.