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TOCS(Tohatsu onboard communication system) is a communication network that integrates the electrical devices within the boat and all devices are compatible with NMEA2000®.

The TOCS gauges are only applicable for models listed below and restriction on the serial no. applies as below.

MFS25/ 30C
Applicable for serial no. 067991AD and above (MFS25/ 30C also requires INTERFACE CABLE(3KY-76133-0) for connection between ECU and engine drop cable.
MFS40/ 50A
Applicable for serial no. 013179AE and above
MD30/ 40/ 50B2
Applicable for serial no. 004743AE and above
MD75/ 90C2
Applicable for serial no. 011819AE and above
Applicable for serial no. 011828AE and above
BFT Model
Applicable for all serial no.

Multi-Function Tachometer

The TOCS Digital Tachometer features large lighted buttons, chrome bezel, fog and scratch resistant coating , plug & play connectors and is LED back-lit for easy viewing at night/dusk. A user-friendly, intuitive design makes the menu easy to navigate. The TOCS multi-function tachometer connects to the CAN bus and communicates directly with the engine’s ECU. Engine data, fault codes and alarms are displayed on the LCD display (TLDI & MFS models only) and are visible even in direct sunlight.
Fits a standard 85mm (3.375 inch) instrument dash hole which makes this tachometer the perfect drop-in replacement for your current tachometer.
In addition to showing the outboard’s RPM’s the gauge also features:Tilt/Trim Gauge (optional harness needed for MFS/TLDI models, part number 3KY-72573-0)

  • Engine Operating Temperature

  • Engine Overheat Warning

  • Engine Battery Voltage

  • Low Battery Voltage Warning

  • Over Rev. Warning

  • Engine Safety Governor Mode Warning

  • Fuel Flow Rate (Gallons Per Hour)

  • Multiple Fuel Tank Levels

  • Total Engine Hours

  • Lanyard Not Installed Warning (not available on TLDI)

  • Low Oil Pressure Warning (TLDI displays Low Oil Level Warning)

  • Oil Change/Scheduled Maintenance Notice (not available on TLDI)

  • Charging System Indicator Warning (BFT models only)

  • Water-In-Fuel Warning (BFT models only)

Part Number Description
3KY-72638-0 Tachometer kit (includes Harness and operation manual)


Part Number Description
3KY-72672-0 Speedometer kit (includes Harness for SPEED)

Trim Meter

Part Number Description
3KY-72523-0 Trim Meter kit (includes Harness with 4 pins)

Fuel Meter

Part Number Description
3KY-72600-0 Fuel Meter kit (includes Harness with 4 pins)

Volt Meter

Part Number Description
3KY-72600-0 Volt Meter kit (includes Harness with 4 pins)

TOCS Starter Kit

Basic starter kit includes Engine drop cable, Battery cable, Terminator(Female and Male), Tee Connector and Tachometer and operation manual. In case other gauges are needed, you can just plug in the additional gauge to display.

No. Part Number Description
3KY-76131-0 Engine Drop Cable
3KY-76120-0 Battery Cable
3KY-76152-0 Terminator (female)
3KY-76153-0 Terminator (male)
3KY-76151-0 Tee Connector
3KY-72638-0 Tachometer kit (includes Harness and operation manual)

Miscellaneous Accessories

No. Part Number Description
3NV-76133-0 Interface Cable (for MFS25/30C)
3KY-72573-0 Extension Cord (for Trim Sensor)


Use our handy database and find a distributor of your area/country.