Radio Shack
All you need is a DB-9 serial cable and some two conductor shielded cable. The serial cable should come with a guide that gives a pin out for its cables. Pin 2 is the Data Tx, Pin 3 is the Data Rx and Pin 5 is the common ground. These need to be connected to the data wires on the radar. The power cable has two NMEA IN channels that do the same thing. Channel one uses Orange for NMEA IN and Yellow for NMEA IN-. The NMEA Tx cores come off the back of the display on a separate gray cable. The Blue is NMEA TX and the White is NMEA TX-. Both of the NMEA-'s need to go to pin 5 on the serial cable. The navigation software manuals should have some diagrams that will help to explain these connections. A terminal block or project box will also come in very handy.
