Wiring Options

Click here to jump to system parameters.

Dart2:

  1. (Default) DM RFID Reader: the reader plugs into the Molex connector and reads 125kHz RFID cards. There is an LED and buzzer built into the reader. Plug the reader into the plug and ensure the the 4 wire connector function in system parameters is set to DM RFID Reader. Note that this is different to the CAN RFID reader used on other products (G60, G100...)
  2. iButton Reader:

The Dart has a 4 way Molex connector on its wire harness. This exposes 4 functions in the wires that are currently used for the 2 purposes described above, The wires are:

  1. System Rail Output on Purple: 4.7V output when connected to external power. Battery voltage output when running on the battery.
  2. Ground on Black
  3. TTL Tx on Brown.
  4. TTL Rx on Green.


This allows the system rail output to used for another purpose, such as LED in the reader - be sure to use a resistor in series (one is already fitted to DM iButton readers). The 4 way Molex connector will need to be cut off, exposing the wires, if the iButton reader does not have a corresponding Molex connector.


You can also use different settings and wires to achieve different LED behaviour (i.e. when it is on or off based on scans) see the article here


Dart2 4-way Molex wire (cut off)
iButton Harness wire
TTL RX (Green) & TTL TX (Brown)
iButton Signal line (red)
Ground (black)
iButton Negative (Yellow) & iButton Ground (Black)
System rail output (Purple)
LED power lines Brown OR Green


You'll also need to set the system parameter for the 4 Wire plug Function in oemserver.com/Device



Note: there was a small change on the Dart to accommodate the iButton readers. This was made in August 2016. It should be usable on Darts with serial numbers greater than 122000.

G62:

1. iButton

To use the iButton on the G62, attach the following wires to the iButton harness.


You can also use different settings and wires to achieve different LED settings. see the article here


G62 Harness wire
iButton Harness wire
G62 iButton Input (Brown)
iButton Signal line (red)
Ground (black)
iButton Negative (Yellow) & iButton Ground (Black)
Vehicle power (red)
LED power lines Brown OR Green

G100:

  1. (Default) DM RFID Reader: the reader plugs into the Molex connector and reads 125kHz RFID cards. There is an LED and buzzer built into the reader. Plug the reader into the plug and ensure the the 4 wire connector function in system parameters is set to DM RFID Reader.
  2. DM CAN RFID Reader: the reader also plugs into the Molex connector and reads 125kHz RFID cards. When using the DMCAN RFID reader, be sure to add the additional System parameter tab
  3. To use an iButton on a G100, please see the Dart2 guide above

G120:

  1. DM RFID Reader: As with the G100 and Dart series, the G120 has a 4 pin molex plug which allows the DM reader to plug in and read 125KHz RFID tags.
  2. to use an iButton on a G100, please see the Dart2 guide above

OEM Server System Parameters:

  • Driver ID: this sets up:
    • Buzz on no Driver ID: if a trip starts and a Driver ID tag has not been scanned, sound the buzzers. Buzzers may be external via the digital output or internal to the RFID reader.
    • Immobilise: if Yes, immobilise via the digital output until a Driver ID tag is scanned.
    • Expire on Trip End: immediately expired the Driver ID when a trip ends. Otherwise, use the expiry time.
    • Test Against List: if Yes, ensure any scanned Driver ID tags are present in the Driver List. If set to No, allow any driver.
    • Expiry Time: how long, in seconds, a Driver ID remains cached after scanning. If a trip starts while cached, it is kept until the end of the trip, or until another tag is scanned.

  • 4 Wire Plug Function: specify if the RFID Reader or iButton is being used. (Dart series Only)

  • Power: should the system rail output be turned off when the Dart goes to sleep.

  • System Rail Output: what the system rail output wire is setup to do. If used with an RFID reader, ensure it is set to "system rail output". If used with an iButton reader, it can be used in different ways. For example set it to LED and connect it to an LED in the reader (don't forget the resistor in series).