The Digital Matter iButton Reader has the following wire colours:
|Red ||iButton Signal Line|
The G62 harness definition can be found here: G62 Harness Colours
The brown and green wires on DM harnesses have 1000 ohm resistors connected.
For a simple implementation (read driver ID, LEDs won't light up) connect the following wires:
|Brown (iButton input) ||Red |
|Connect to G62 or vehicle GND||GND|
To control the LED, the Switched GND output of the G62 can be used to provide a GND to the LED negative (yellow) on the iButton
In this case, connect the following:
|Brown (iButton input) ||Red (signal line)|
|G62 or vehicle GND||Black (GND)|
|Positive on vehicle||Green or Brown|
|Green (Switched GND output)||Yellow|
Depending on parameter setup, when the switched ground is on (provides GND) the LED will turn on.