I would like to know what coloured wires connect to where in a Furuno Gps navigator 31

You need a 7 pin NMEA cable, pn 000-154-028. Yellow is NMEA + and Green is NMEA-

TXA and TXB are the two data lines.
Confirm data present with digi meter then hook up. Try both polarities
John 847-746-0100

Assuming you have GPS input to your 1732 (i.e. GP310/320 sensor), you'll need a 7 pin NMEA data cable (000-154-028) wired to a D-sub 9 pin (serial) plug. The shield goes to pin 5, blue to #3, & white to #2. Jumper pins 7 & 8 together. The 7 pin cable goes to Data port 3 of the 1732.

Using the nmea output from your GP-31 to the nmea input on the VHF. Enable the GLL Sentence and make sure the port is set for nmea0183. Remember hooking nmea up it's positive to positive and neg to neg. Once that is done and you have a fix you should have lat and long on your vhf.

http://www.mapsunique.com/ev/special-inst/furuno-30.htm

Here is a site that knows something about it. and to find where to buy one google it.

I found someone else to assist me.

Yes the output forom the Furuno GPS (like a GP31) will be yellow and green, hook these to theinput on the plotter blue (or black) and white. Use Data1 on potter as the input and select a nav source of "ALL" in setup menu.

A power cable for an RD-30

Hello!
I have the connection diagram for the GPS unit below.  It should be simple to wire up.  You will need a USB to RS-232 converter, which is available in a number of computer shops/Radio Shack.
Hope this helps you out,
Ken

Connecting cable to PC - see

http://furuno.inforce.dk/graphics/14_Softwares/09_gps/FURUNO_GP-32_pc_connect.pdf