Mercury – Race Vessel AGI Harness | Performance Gauge Link | 892486K05

Overview
This Race Vessel AGI harness ties your trim tabs, engine trim, and both fuel-level circuits into the PCM using the 3-pin gauge link. It’s built for race-engine setups already running a Race Engine AGI, giving those gauges a clean, steady signal. Out on the water, it helps keep the readings from bouncing around when the boat hits chop or settles into a hard run. Simple hookup, clean routing, and ready for any PCM family.

Key Features
    • 3-Pin Gauge Link – Feeds tab, trim, and fuel-level signals to the PCM.
    • Dual Fuel Inputs – Supports tank 1 and tank 2.
    • Tab Position Signals – Handles both port and starboard tab senders.
    • Voltage Suppression – Helps protect the PCM from spikes.
    • Race-Engine Ready – Designed to pair with the Race Engine AGI setup.

Engine & Boat Compatibility
    • All PCM families
    • Race Engine AGI systems
    • Performance boats running analog-style gauges
    • Dual-tank fuel layouts

Performance & Practical Benefits
On the water, this harness helps trim and tab gauges behave the way they should—no bouncing, no ghost readings, and no random dropouts. Fuel levels stay steadier too, which really helps on longer runs or rough days. The wiring path is simpler and cleaner, which means fewer little issues to chase later.

Why Buy OEM
OEM wiring matches Mercury’s pinouts perfectly and stays tight even when the boat is getting worked. It’s built for heat, vibration, and spray—things that usually expose cheap wiring fast. Most boaters running performance setups stick with OEM because one bad harness can throw multiple gauges off.

FAQ
1. How do I know this is the right harness?
If you’re running a Race Engine AGI and need tab, trim, and dual-fuel signals, this is the one.

2. Does it feed SmartCraft digital gauges?
No—it feeds analog-style signals through the AGI.

3. Do I need a J-Box?
Not for this link—the AGI handles the interface.

4. Is the install tough?
No—plug it into the AGI, route it neatly, and hook up your gauges.

5. What does a failing harness look like?
Tabs jump around, fuel levels flicker, trim readings drift, or several gauges misbehave at once.