DART3 12-wire Harness Definition
Written by Matthew Clark-Massera
Updated at November 5th, 2024
Table of Contents
- The Dart3 comes with a 12 wire, 650mm long harness
- 15mm is pre-stripped on the input (red), ground (black), and the ignition (white) wires.
- Wire gauge is 0.35mm²
Harness Diagram:
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Wire Definition:
| Pin | Colour | Function |
| 1 | +VIN / BATT (8-36V) | |
| 2 | GROUND | |
| 3* | VOUT | |
| 4* | Driver ID 2 TTL RX / Wiegand D0 / Digital Input 3 |
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| 5 | DIGITAL INPUT 1 (48V max) | |
| 6 | ANALOGUE INPUT (0-30V) | |
| 7 | GROUND | |
| 8 |
IGNITION INPUT (0-48V) 'on' at >2.2V |
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| 9* | GROUND | |
| 10* | Driver ID 1 TTL TX / Wiegand Data 1, iButton |
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| 11 | DIGITAL INPUT 2 (48V max) | |
| 12 | SW GROUND |
Driver ID
Driver ID 1 and Driver ID 2 are used for various functions depending on configuration. Either:
- Driver ID 1 and 2 can be used to connect a Digital Matter RFID reader (plugs in via the 4 way molex connector)
- Driver ID 1 can be used as the iButton Data Line, and Driver ID 2 can be used as a 3rd Digital Input. This can be independently or simultaneously.
- Driver ID 1 and 2 can be used to connect Wiegand Driver ID readers
Molex Connector:
PIN 3,4,9 and 10 goes to to the 4 way Molex connector.
The four way Molex connector comes as part of the 12 way harness, with pins 3, 4, 9 and 10 from the main harness going to the connector. This can then be used for a plug and play connection to the DM RFID reader.
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| PIN | COLOUR | FUNCTION |
| PIN 1 | GROUND | |
| PIN 2 |
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TTL RX / Wiegand D0 / Digital Input 3 |
| PIN 3 | VOUT | |
PIN 4 |
Tnd DTL TX, Wiega1, iButton |
Connector Details:
Some partners may choose to build their own harnesses, or fit a suitable mating part to the 4 way molex connector to their own RFID readers to simplify installations.
To assist with this, part numbers of the connectors on the Dart3 wiring harness are shown below.
| 12 way Main Connector | Connector Housing Receptable 12 position 3mm straight bag | Part Number: 43025-1200 |
| 4 way Molex connector | MIcro fit 3.0 plug housing, dual row with panel mount ears, halogen-free, 4 Circuits | Part Number: 43020-0400 Mouser Link |
Plug and Play Connection Options:
We also have an OBD harness or a Cigarette Lighter harness options available.
Please note that you will not be able to get an ignition trip if you are using either of these harnesses, since a dedicated ignition wire is only available in the 12-wire harness. The device will work out trips based on movement or change in voltage.
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