Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network
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Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network Product Description
Imagine glancing at a single, crystal-clear display on your helm and instantly knowing the health of your diesel engines—RPM, temperatures, pressures, fuel efficiency, and even diagnostic alerts—all without cluttering your dash with extra gauges. The Simrad IS42J makes this a reality for boaters relying on J1939-equipped diesel engines, seamlessly translating raw engine data into actionable insights shared across your entire NMEA 2000 network.
This compact powerhouse isn't just a monitor; it's a smart gateway that eliminates the hassle of separate converters. Fishermen on long hauls, cruisers exploring coastal waters, or workboat operators pushing limits in rough seas all benefit from its rugged build and intuitive interface. With optical bonding that fights fogging and glare, you stay informed even under pounding rain or blazing sun.
Standout Features That Set It Apart
- Vivid 4.1-inch Color LCD: High-resolution 320x240 display delivers sharp graphics for engine speed, load percentages, coolant temps, oil pressures, and fuel flow—customizable screens let you prioritize what matters most.
- Dual-Engine Monitoring: Handles data from two J1939 diesel engines simultaneously, pulling in SPN parameters like trouble codes and alerts for proactive maintenance.
- Integrated J1939 to NMEA 2000 Bridge: No external boxes needed—engine data flows directly to compatible multifunction displays, chartplotters, or other gauges vessel-wide.
- Marine-Tough Design: IPX7 waterproof rating, responsive silicone keys for gloved or wet hands, and a slim glass-front profile that blends into any helm.
- Fuel Smarts: Tracks usage and economy in real-time, helping optimize runs and cut costs on fuel-hungry diesels.
- Plug-and-Play Simplicity: One cable per engine, single power hookup—up and running in minutes.
Real Benefits for Serious Boaters
Why settle for fragmented readouts when the IS42J consolidates everything? Boaters report fewer surprises at sea, catching issues like overheating or low oil before they escalate. Its NMEA 2000 integration shines on multi-station setups, letting the mate check engines from the flybridge while you helm. In salty, vibration-heavy environments, the bonded glass and sealed controls outlast cheaper alternatives, keeping your focus on the water, not the wiring.
For diesel owners upgrading from analog gauges, this unit modernizes your setup without ripping out factory harnesses. Pair it with Simrad's ecosystem for a unified view—engine stats alongside charts, sonar, and radar—for smarter decisions that enhance safety and efficiency.
Streamlined Installation Tips
Getting the IS42J online is straightforward, even for weekend mechanics:
- Mount the low-profile unit flush on your dash using the included kit.
- Connect engine-specific J1939 adaptor cables (one per engine) to the dedicated ports.
- Hook up the NMEA 2000 drop cable and T-connector to your backbone.
- Wire to 12-24V DC power—done. Power cycle, and auto-configuration handles the rest.
Pro tip: Position it near the helm for quick glances, and use the sidebar configs for at-a-glance fuel economy during trolling or cruising.
Seamless Compatibility Across Your Vessel
Built for J1939 protocols common in brands powering commercial and recreational diesels, it decodes a broad range of parameters. NMEA 2000 output plays nice with Simrad NSS, NSO, or GO series, plus third-party devices. Requires basic network infrastructure like terminators and power insertion—ideal for retrofits on older boats chasing digital precision.
Package Contents
- IS42J display unit
- 2-foot NMEA 2000 extension cable
- NMEA 2000 T-connector
- Complete mounting hardware kit
- Protective suncover
Frequently Asked Questions
What types of engines work with the Simrad IS42J?
It supports J1939-compliant diesel engines from major manufacturers, displaying key metrics like RPM, temperatures, pressures, and DTCs for up to two engines.
Does it require extra hardware for NMEA 2000 sharing?
No black-box gateway needed—it's built-in. Just add standard NMEA 2000 cabling, drop cables, and backbone for network integration.
Is the display readable in direct sunlight or fog?
Yes, the optically bonded glass prevents fogging and reduces glare, ensuring visibility in harsh marine conditions.
Can I customize what data shows on screen?
Absolutely—configure digital readouts, graphical bars, fuel economy, and alerts via simple keypad menus for personalized views.
What's the waterproof rating and power needs?
IPX7 rated for immersion up to 1 meter. Draws from 12-24V DC boat supply with micro-power draw.
How does it handle engine alerts?
Displays diagnostic trouble codes (DTCs) and warnings prominently, with audible alerts for critical issues.
Is it suitable for both single and twin-engine boats?
Yes, monitors one or two J1939 engines, scaling effortlessly for various vessel sizes.
Simrad IS42J Instrument DisplayWith J1939 Engine Data Display and NMEA2000 GatewayThe IS42J offers customizable views of engine status and performance data, for up to two J1939 diesel engines. View engine speed, load, pressures, temperatures, alerts (including diagnostic trouble codes), and other key data on one clear graphical display. The IS42J is simple to install, with one cable to each of your engines and a single connection to your boat's DC power supply. With a dual-engine J1939 gateway built in, there are no separate "black-box" components to install.This 4.1-inch color display offers a clear view of engine status and performance for up to two J1939 diesel engines. More than a standalone gauge, the IS42J also bridges the gap between those engines and your boat's NMEA 2000 network. This enables engine monitoring from other Simrad gauges and multi-function displays without the need for a separate J1939 gateway or converter.Designed for use in all conditions, the IS42's full-color display panel is optically bonded to its protective glass covering; this eliminates the possibility of condensation or fogging within the display. Simple, waterproof controls make the IS42 easy to use in rough conditions, and reliably responsive to wet or gloved hands.The IS42J is simple to install, with one cable to each of your engines and a single connection to your boat's DC power supply. With a dual-engine J1939 gateway built in, there are no separate "black-box" components to install. Plug-and-play adaptor cables are available to suit a wide range of J1939 diesel engines. Sharing engine data with other Simrad gauges or displays is also simple, with industry-standard NMEA 2000 connectivity.Minimum product requirements:Requires an engine-specific J1939 cable for each connected engine. An NMEA 2000 drop cable, joiner, and network infrastructure are required to share engine data with other gauges or displays.
Simrad 0014479001 Attributes
- Display Size: 4.1 Inch
- Display Type: LCD
- Resolution: 320 x 240 Pixels
- Interface: Keypad
- Dimensions: 4.1 Inch Length X 1.4 Inch Width X 4-1/2 Inch Height
- Waterproof: IPX7 Rating Waterproof
- Sensor Compatibility: NMEA 2000 Compatible
Simrad 0014479001 Features & Benefits
- Bright, optically bonded 4.1-inch color display
- Monitor up to two J1939 connected engines
- Built-in J1939 to NMEA 2000 gateway
- Intuitive operation with waterproof silicon keys
- Easy to install and configure
- Low-profile glass helm design
- Limited 2 Year Warranty
Simrad 0014479001 Installation Instructions
Simrad 0014479001 Warranties
Simrad 0014479001 Technical Bulletins
IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network
More than a standalone gauge, the IS42J links J1939 diesel engines to the boater’s NMEA 2000® network. This allows boaters to view engine data on a wide range of other Simrad gauges and multifunction displays, vessel-wide, without the need for a separate J1939 gateway or converter.
The IS42J is simple to install, with only one cable required for each J1939 engine and a single connection to the boat’s DC power supply. With a dual-engine J1939 gateway built in, there are no separate black-box components to install, and plug-and-play adapter cables are available to suit a wide range of J1939 diesel engines. Sharing engine data with other Simrad gauges or displays is also simple via NMEA 2000® connectivity.
Key Features:
- Bright, optically bonded 4.1-inch color display
- Monitor up to two J1939 connected engines
- Built-in J1939-to-NMEA 2000® gateway
- Intuitive operation with waterproof silicon keys
- Easy to install and configure
- Low-profile glass helm design
- Displays and converts many J1939 SPN’s
- Configurable data types for digital values and sidebars
- Fuel usage and fuel economy monitoring
The dual-engine display IS42J can provide customizable engine status and performance data views for up to two J1939 diesel engines. View engine speed, load, pressure, temperature, alarms (including diagnostic fault codes) and other key data on a clear graphical display. Designed for use in all conditions, the IS42's full-color display panel is optically bonded to its protective glass cover. This eliminates the possibility of condensation or fogging on the display. Simple, waterproof controls make IS42 easy to use in harsh conditions, and have a reliable response to wet or gloved hands. The built-in J1939 to NMEA 2000 gateway IS42J is not only an independent instrument, but also can connect the J1939 diesel engine to the ship’s NMEA 2000 network. In this way, you can view engine data on various other Simrad pressure gauges and multi-function displays on board without the need for a separate J1939 gateway or converter. Easy to install-IS42J is easy to install, one cable is connected to each engine and one is connected to the marine DC power supply. Built-in dual-engine J1939 gateway, no need to install a separate "black box" component. The plug-and-play adapter cable is suitable for various J1939 diesel engines. Through the industry standard NMEA 2000 connection, sharing engine data with other Simrad instruments or displays is also very simple.
Frequently Asked Questions (FAQ) About Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network
Who is the Simrad?How to describe Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network?
What is the resolution of the product?
Is this product waterproof?
What is the display type of the product?
What is the display size of the product?
What is the controlling interface of the product?
What is the dimensions of the product?
Who is the Simrad?
How to describe Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network?
- The IS42J provides a seamless way to connect J1939 diesel engines to the boater’s NMEA 2000® network.
- The IS42J allows boaters to view engine data on a wide range of other devices, such as chart plotters, radar displays and AIS receivers.
- The IS42J is also compatible with third-party software applications like MaxSea and Raymarine EHS2.
- The IS42J is the perfect solution for boaters looking to connect J1939 diesel engines to their NMEA 2000® network.
- Data from the engine is transmitted to other devices on the network, so that boaters can view data from anywhere on their boat.
- The IS42J is more than a standalone gauge - it’s an all-in-one device for marine applications.
What is the resolution of the product?
- The IS42J provides a seamless way to connect J1939 diesel engines to the boater’s NMEA 2000® network.
- The IS42J allows boaters to view engine data on a wide range of other devices, such as chart plotters, radar displays and AIS receivers.
- The IS42J is also compatible with third-party software applications like MaxSea and Raymarine EHS2.
- The IS42J is the perfect solution for boaters looking to connect J1939 diesel engines to their NMEA 2000® network.
- Data from the engine is transmitted to other devices on the network, so that boaters can view data from anywhere on their boat.
- The IS42J is more than a standalone gauge - it’s an all-in-one device for marine applications.
- Simrad IS42J 4.1" Color Display With J1939 to NMEA 2000 Gateway Model: 000-14479-001
- Bright, optically bonded 4.1-inch colour display
- Monitor up to two J1939 connected engines
- Built-in J1939 to NMEA 2000& 174; gateway
- Intuitive operation with
- Simrad IS42J 4.1" Color Display With J1939 to NMEA 2000 Gateway Model: 000-14479-001
- Bright, optically bonded 4.1-inch colour display Monitor up to two J1939 connected engines Built-in J1939 to NMEA 2000& 174; gateway Intuitive operation with
- Simrad IS42J 4.1" Color Display With J1939 to NMEA 2000 Gateway Model: 000-14479-001
Is this product waterproof?
What is the display type of the product?
What is the display size of the product?
What is the controlling interface of the product?
What is the dimensions of the product?
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Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Simrad |
| Weight: |
1.75 lb |
Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network User Reviews
Simrad IS42J Instrument Links J1939 Diesel Engines to NMEA 2000® Network Shipping & Return
| Shipping Weight: |
1.75 lb |
|---|---|
| Box Sizes: |
5.00 (h) x 6.00 (w) x 9.00 (l) |
| Cubic Feet: |
270.0 |
| Returnable: |
Yes |
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