Mercury – MP Alert Control Module | SmartCraft Prop-Safety Controller | 8M0117114

Overview

The MP Alert system relies on a central controller to activate the warning lights at exactly the right time. The Mercury 8M0117114 MP Alert Module is that controller. It’s the SmartCraft-ready brain of the Moving Prop Alert system, turning the lights on automatically whenever the propeller is in motion. On boats with Joystick Piloting, the module also integrates with the SkyHook feature, giving you prop-motion visibility even during position-holding maneuvers.

Key Features

• MP Alert System Controller – Activates and manages the warning lights for the Moving Prop (MP) Alert system.
• SmartCraft Integration – Ties directly into SmartCraft engine data for precise, automatic activation.
• SkyHook Compatibility – Can turn lights on or off based on SkyHook’s operating state on Joystick-equipped boats.
• Accurate Prop-Motion Detection – Uses engine-status signals instead of vibration or manual switching.
• OEM Marine Module – Built to handle heat, moisture, and vibration in real-world conditions.
• Plug-In Replacement – Swaps directly into existing MP Alert wiring harnesses.

Compatibility

• Mercury SmartCraft engines
• MP Alert light systems (oval and cowl-mounted options)
• Mercury Joystick Piloting boats using SkyHook
• MP Alert add-on and expansion lights

Performance & Practical Benefits

This module ensures the MP Alert lights activate exactly when they should—when the prop is spinning. It removes the guesswork and ensures the warning is always timely and reliable. On Joystick boats, it works with SkyHook so light activation stays consistent whether you’re docking, holding position, or maneuvering in tight quarters. If an MP Alert system seems inactive, inconsistent, or fails to light up at the right moments, this module is often the component that restores proper operation.

Why Buy OEM

The MP Alert system depends on precise SmartCraft signals, and only the OEM controller is programmed to interpret them correctly. Off-brand modules can’t match the timing, communication accuracy, or environmental durability Mercury builds into its electronics. The factory module guarantees proper light behavior and long-term reliability.

FAQ

Q1: What does this module actually do?
It controls when the MP Alert lights turn on—activating them automatically when the prop is in motion.

Q2: Is this required for SmartCraft engines?
Yes. SmartCraft MP Alert installations rely on this controller for correct operation.

Q3: Does it work with SkyHook?
Yes. On Joystick Piloting boats, the module syncs light behavior with SkyHook activity.

Q4: Does this include any lights or harnesses?
No. It’s the module only. Lights and harnesses are sold separately.

Q5: Is installation complicated?
Not typically—it plugs into the existing MP Alert harness and integrates with SmartCraft automatically.