Karl,
I too now have a BN-180 GPS module and and arduino nano flashed with the openXsensor sketch.
I am looking at Chapter #9 to gain information for the correct connections to make from the GPS (Vcc, Tx,Rx, Gnd) to the nano.
However, the instructions in Chapter #9 states:
"- GPS Vcc is normally connected to Arduino Raw pin (which is normally connected to Vcc from the receiver). "
And.....when I search out the arduino nano pinout connections, I see no mention of a "raw" pin.
What is this pin? It must have another number or name?