I created this simple guide to show you how to simply make a DDA OBD2 connector for your Ducati Monster (797 or older models with fuel injection).
The OBD2 connector (Ducati "DDA" connector) is located under the seat. So, the first step is to remove the seat, and locate the connector. This connector has 4 pins, and it is not the standard OBD2 connector available on most cars, which has 16 pins in total. Therefore, if you want to use an ELM327 or similar interfaces to communicate with your Ducati, you must make an adapter cable which wires the 4 pins of this DDA connector, to the standard OBD2 female connector (16 pins). Only 4 pins are needed:
- +12V (Battery)
- Chassis/Signal GND (0V)
- CAN High
- CAN Low
The following is the pinout of the Ducati DDA connector, on motorcycle side.
Vehicle side has female connector, so you need to make a male one. The part numbers are visible below: 673-7868 (211CL2S1160) and 673-7789 (211PL042S0011) for the Delphi pins and plastic connector. All these parts are available on Aliexpress, RS Components or similar websites.