Navman Tracker 5500i GPS Receiver "cutting plotter" Questions

I bought a C80 Raymarine Plotter this has a NMEA pigtail with Brown, Screen, Yellow, Green And White wires I haave also bought a RS 125 Receiver this has a pigtail lead with Red , Green, Yellow, Brown

navman 5500 gps backlight dim but set to max backlight on navman 5500 is set to max but hard to see in daylight seems like a bulb is loose it will every once a while get bright Its water ingress ...

5500 Navman no brightness selection have followed manual, pressed bottom icon, shows maximum brightness but still unable to see clear picture Its water ingress causing a short in the high voltage ...

I bought mine from Radio Shack for @ $40. You could probably save money by buying 2 connectors and cutting the ends off your ethernet cables

Replacing an RL-70 with an RL 70-CRC I currently have an RL70 radar/chartplotter, circa later 1998 or early 1999. The unit is monochrome and working perfectly. I have always wanted to update the unit ...