Raymarine E22158 SeaTalkNG Backbone Kit

Raymarine E22158 – SeaTalkNG Backbone Kit

The E22158 is Raymarine’s complete SeaTalkNG backbone installation kit, providing all the core hardware needed to build a working SeaTalkNG network backbone from scratch. It includes backbone cables, T-piece connectors, terminators, and a power cable — everything required to get your SeaTalkNG-compatible electronics communicating on a single, properly terminated network.

Product Details

• Part Number: E22158
• Brand: Raymarine
• Type: SeaTalkNG Backbone Installation Kit
• System: SeaTalkNG / NMEA 2000-compatible network backbone
• SKU: 152-E22158
• Estimated Weight: ~900 g (kit with packaging)

Kit Contents

• 2 × A06031 SeaTalkNG Backbone Terminator — One for each open end of the backbone
• 1 × A06037 SeaTalkNG Backbone Cable – 7M — Primary backbone trunk cable (not sold individually in this store)
• 2 × A06036 SeaTalkNG Backbone Cable – 5M — Additional backbone segments
• 4 × A06028 SeaTalkNG T-Piece Connector — Spur drop points along the backbone
• 1 × A06049 SeaTalkNG Power Cable — Supplies 12 V DC power to the backbone (not sold individually in this store)

Compatible Applications

• New SeaTalkNG backbone installations on any vessel running Raymarine electronics
• Connecting Raymarine MFDs, autopilot heads, instrument displays, radar scanners, and sonar modules to a shared SeaTalkNG network
• Mixed-network vessels using SeaTalkNG as the primary backbone with NMEA 2000-compatible devices via adaptor
• Rebuilds or full refit of an existing SeaTalkNG backbone where cables or connectors have aged or been damaged

System Overview

SeaTalkNG is Raymarine’s networking standard for onboard electronics, physically and electrically compatible with NMEA 2000. The backbone carries both data and 12 V DC power, with devices tapped off the backbone at T-piece connectors using spur cables. Every SeaTalkNG backbone must be terminated at both open ends using terminator plugs — both are included in this kit. The backbone power cable connects the backbone to your vessel’s 12 V DC supply.

Parts Desk Insights

Best Use Case: This kit is the right starting point for any new SeaTalkNG installation. Rather than sourcing individual backbone cables, T-pieces, terminators, and a power cable separately, the E22158 gives you a verified set of Raymarine components sized for a typical mid-sized vessel backbone. It’s especially useful for first-time SeaTalkNG builds where having the right termination hardware from the start avoids the most common network startup issues.

Common Issues: The most frequent problem customers encounter is an unterminated backbone — both ends of the backbone trunk must have terminator plugs installed (included in this kit) or the network will not initialize correctly. Also note that this kit provides the backbone infrastructure only; spur cables to connect individual devices are purchased separately depending on each device’s port and distance. If you need to connect non-Raymarine NMEA 2000 devices to this backbone, you’ll also need a DeviceNet adaptor.

Related Products & Accessories

• Raymarine T70134 SeaTalkNG Starter Kit — Entry-level SeaTalkNG kit for smaller installations
• Raymarine A06035 SeaTalkNG Backbone Cable – 3M — Additional backbone cable if you need to extend the run
• Raymarine A06034 SeaTalkNG Backbone Cable – 1M — Short backbone segment for tight spaces
• Raymarine A06033 SeaTalkNG Backbone Cable – 400mm — Bridging segment between two junction points
• Raymarine A06031 SeaTalkNG Backbone Terminator — Replacement terminators if needed
• Raymarine A06028 SeaTalkNG T-Piece Connector — Additional spur tap points
• Raymarine A06082 NMEA 2000 to SeaTalkNG Adaptor — Connect DeviceNet NMEA 2000 devices to the SeaTalkNG backbone
• Raymarine A06076 SeaTalkNG to DeviceNet Adaptor Cable – 1M — Alternative NMEA 2000 adaptor option

Technical FAQ

How many devices can connect to this backbone?
The kit includes 4 T-piece connectors, providing 4 spur drop points. You can add additional T-pieces or a 5-way connector block to increase the number of connection points. SeaTalkNG supports up to 50 nodes on a single backbone.

Do I need spur cables?
Yes — spur cables run from each T-piece to individual devices. The spur cable length and connector type depends on each device. Spur cables are not included in this kit.

Is SeaTalkNG compatible with NMEA 2000?
SeaTalkNG is electrically compatible with NMEA 2000 but uses Raymarine’s proprietary blue connectors. Use an adaptor cable (such as the A06076 or A06082) to integrate NMEA 2000 DeviceNet devices into the SeaTalkNG backbone.

Can I extend the backbone beyond the cables in this kit?
Yes — backbone cables can be chained end-to-end via T-pieces. Order additional backbone cable lengths as needed to reach your full installation span.