Description
Mercury 8M0165557 SmartCraft 5-Way Junction Box Kit
The Mercury 8M0165557 is a critical networking component for boats utilizing SmartCraft digital technology. This 5-way junction box acts as a central communication hub, allowing you to connect multiple SmartCraft devices—such as gauges, sensors, and GPS modules—into a single integrated system. By consolidating your digital architecture, this kit ensures seamless data transfer between your Mercury outboard or MerCruiser engine and your helm displays.
Applications
- Digital Networking: Essential for expanding SmartCraft networks to include additional gauges or NMEA 2000 gateways.
- System Compatibility: Designed for use with all SmartCraft-capable Mercury engines and digital rigging components.
- Customizable Layouts: Allows for easy "plug-and-play" additions to your boat's electronic suite without complex rewiring.
Shipping & Returns
Electronic items are not returnable
In-stock digital networking components ship quickly to help you complete your rigging project. For our full return policy, please visit /policies/refund-policy.
Key Facts
Brand: Mercury Marine
Part ID: 8M0165557
Ports: 5-Way Connectivity
Technology: SmartCraft Digital Protocol
Protection: Weatherproof terminal caps included
What’s Included
Junction Box: (1) 5-Way SmartCraft Junction Box
Terminal Protection: (3) Weatherproof caps for unused ports
Service Notes
Unused ports must always be sealed with the included weather caps to prevent moisture intrusion and corrosion of the digital pins. When mounting, choose a dry location under the dash or in a protected compartment to ensure the longevity of the electronic connections.
Frequently Asked Questions
Can I link two junction boxes together?
Yes, you can use a male-to-male adapter cable to connect multiple junction boxes if your system requires more than five ports.
Do I need a terminator with this box?
Standard SmartCraft networks require termination at both ends; if this box is at the end of a data line, a yellow termination resistor may be required.
Will this work with non-Mercury gauges?
This box uses the proprietary SmartCraft protocol. To connect NMEA 2000 devices, you will typically need a SmartCraft-to-NMEA 2000 gateway connected to one of these ports.