Here are some piccies and wiring instructions for the canbus Sat Nav plug on K12/13 bikes.
The plug is to be found under the battery cover, normally tie-wrapped to the frame. It is black and looks like this:
Here is the connector cable that you can order at your dealer. BMW Part number is 90 000 611 656. Also available from Nippy Normans etc.
The three wires are numbered 1 through 3, bottom to top in photo above.
Wire 1 = Earth, ground, whatever you choose to call it.
Wire 2 = +12v On and off with ignition.
Wire 3 = +12v Direct on with ignition and delayed by 1 minute after ignition is switched off. Time delay varies depending on bike, weather, day of week etc.
Nippy Normans instructions urge one not to use one of the wires but most of us have got the sat nav wired between 1 and 2 or 3 depending if we want the delay or not. No issues reported so far!
Enjoy!
Brian (who used to be an illektrizun, but now he can't spell it
)
PS Don't know where I got these piccies from but wherever it was, I hereby credit the originator. If anyone recognises the photos or the thumb, do let me know the name and I shall gladly give real credit.