Pinout of the OBD2 to DB9 Cable
The Standard Display Cable may be connected to the optional DB9 to OBD2 Cable for direct connection to the Diagnostics CAN bus and power in a vehicle. The pinout of that cable is as follows:

DB9
Pin Function
Pin 2
CAN L
Pin 3
Ground
Pin 5
Ground
Pin 7
CAN H
Pin 9
Power Supply 10-32V

OBD2
Pin Function
Pin 4
Ground
Pin 5
Ground
Pin 6
CAN H
Pin 14
CAN L
Pin 16
Battery Power
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