Raymarine RL80C with NMEA GPS receiver

[bobs]

Hello gents,

We all know a raymarine GPS receiver , seatalk connectable, is an expencive neccesary gadget right.
Therefor I was wondering if it's possible to use a normal usb GPS receiver , cut the usb thing off en use a few of the 6 internal wires ,
-one like this-

http://www.uploadarchief.net/files/d...c00408-800.jpg

and connect it to a RL80C plus radar/chartplotter unit by using of the NMEA input.
-This is the raymarine connection cable and 5 NMEA leads (the thick red and black are power supply for the unit) -

http://www.uploadarchief.net/files/d...c00411-800.jpg

400$ question is , what usb receiver lwires goes to what raymarine NMEA wires ?


Raymarine colours :
(infolabel on the cable)


orange= plus channel 1
yellow= minus channel 1
green= plus channel 2
blue = minus channel 2
bare wire = ground

USB receiver colours

red = ?
black = ?
yellow = not connected in the USB port
green = ?
blue = not connected in the USB port
white = ?

Tricky question is it not.

Thanks and regards.