Freightliner Cascadia uses the same connector style for their systems which have Dual J1939 busses. Their pinout is as follows:

Cavity	Description
A	Ground
B	Battery
C	J1939+
D	J1939-
E	J1939 Shield
F	J1708+
G	J1708-
H	CAN 2 +
J	CAN 2 -

PACCAR uses the same connector style for their systems which supports an ISO9141 K-line interface. Their pinout is as follows:

Cavity	Description
A	Ground
B	Battery
C	J1939+
D	J1939-
E	J1939 Shield
F	J1708+
G	J1708-
H	-
J	ISO9141 K

The CNH interface (Dual CAN plus ISO K Line) pinout is as follows:

Cavity	Description
A	Ground
B	Battery
C	CAN 1/J1939+
D	CAN 1/J1939-
E	ISO9141 K Line
F	-
G	-
H	CAN 2/J1939+
J	CAN 2/J1939-

J1939 Vehicle Connector

Pin Extract Tool for J1939 and CAT Connectors

Pin Extract Tool

CAT Industrial uses a similar connector. It is also a 9 pin deutsch, but the center pin has no key tab. Also the socket shrouds are slightly larger. You can try to force a fit, but DO NOT. It has a very different pin assignment:

Cavity	Description
A	Battery
B	Ground
C	CAN Shield
D	CAT Data Link +
E	CAT Data Link -
F	J1939+
G	J1939-
H	J1708-
J	J1708+

CAT Industrial DLC Connector