Does a 3-Wire harness receive data from a vehicle?

Related Questions

  • What kind of data does HRN-CW03S3 process?

Applies To

  • HRN-CW03S3
  • Three-wire Harness


A GO device installed via a 3-wire harness records limited data from a vehicle, including ignition and excluding engine data. A GO device installed via 3-wire harness can still record GPS-based tracking/trip, accelerometer, telematics device voltage, and other telematics device measurements. 

Additional Notes

The three wires in a 3-wire harness are power, ignition, and ground. Due to this, no engine data can be communicated via this harness. 

For more information on HRN-CW03S3, please refer to Geotab's HRN-CW03S3 Documentation