I found the pinout of the BMW GPS receiver. I post it since I think it could be of interest not only for BMW owners but for all wwanting external GPS antenna.
I do not get much smarter from it though... If not GPS_RXDN is "neutral/gnd" or maybe a balanced connection... And what is PPS?...
Getting tempted to buy one and try it out...
And its assembly where you also can see the antenna connection.
