How to build a cable to access the MBB

This information based off of the following thread: How to build a cable to access the MBB:

Parts

• USB to TTL cable with 5V (red), ground (black), TX (green) and RX (white) wires.

  

  USB to TTL cable

• OBD II plug.

  

  OBD II plug

Steps

1. Cut the connectors off the end of the green, white and black wires to expose bare wires.
2. Solder the wires to the pins on the OBDII connector as follows:
   • Black wire (ground) to pin 5
   • White wire (RX) to pin 8
   • Green wire (TX) to pin 9
   • Red wire is not connected (+5V)
3. Plug cable in to laptop computer; device should be recognized and driver installed successfully.
4. Note the COM port or device used.
5. Connect cable to the OBD port on the bike.
6. Key the bike on.
7. Connect via laptop.
8. Configure the Baud rate:
   • Gen1 (pre-2013): 9600 (2011 Zero DS reported 9600N1)
   • Gen2: 38400
   • Gen3 (SRF): 115200

   Windows

   Open Putty terminal program (freeware) and use Serial connection to connect to COM port (eg COM4) and set baud rate.

   Mac

   Open CoolTerm (freeware, unsigned) and connect to the bluetooth serial modem and set baud rate.

   Linux/Unix-like

   Open minicom/etc. and connect to the USB (likely /dev/ttyUSB0) or bluetooth serial modem and set baud rate.

9. Open connection and the MBB prompt should be displayed (hit enter key if not)

   

10. Type help and hit enter to get a list of commands that you can run.