Installation Manual

22
).
Note
FJ3 does not function properly if an ignition On/Off wire is not
connected. FJ3 goes into Sleep mode 30 min after turning off the
ignition.
6.2 Connect J1708 Data wires to the FJ3
The instructions for this procedure depend on the type of the connector equipped with
the vehicle – whether it is a J1708 CAB9 (9 pin) connector or a J1708 CAB (6 pin)
connector.
The following sections provide instructions for both types of vehicles.
To view the connectors’ pin-out information, refer to the Error! Reference source not found.
Note
Optional Power Supply Connection J1708 6-pin connector
The power supply can be connected to FJ3 from the J1708 CAB
6-pin connector, if pin C provides 12 – 24 volts with the ignition in
the off position:
- Connect Pin C to BATT (+) on the FJ3.
- Connect Pin E to BATT (-) on the FJ3.
Roseman do not sell or provide a J1708 6-pin harness
Note
Optional Power Supply Connection J1708 9-pin connector
It is possible to supply the power to the FJ3 from the J1708CAB9 if pin 2/B has
12-24 volts with the ignition in the off position:
- Connect Pin 2/B to BATT (+) on the FJ3.
- Connect Pin 1/A to BATT (-) on the FJ3.
Roseman 9-pin J1939 harness includes J1708 wires.
6.2.1 Connect the FJ3 to the J1708 9-pin CAB9 Connector
If the vehicle has a 9 pin Deutsch connector perform the following, (if not using the AW 9-pin cable):
1. Run a twin wire cable from the vehicle connector to the FJ3.
2. Connect the J1708 Data link (+) wire from pin F of the Deutsch connector.
3. Connect the J1708 Data link (-) wire from pin G of the Deutsch connector.