I have spent a little more time on this. I worked with a Raymarine tech on their technical forum and i received excellent information. Based on that I was able to verify that the masthead unit is working correctly. It appears that the display unit is not. I will remove and send to Raymarine for service.
Raymarine also stated that the Seataclk cable D284 is all I need to connect the speed and wind instrument so I can get both apparent wind speed and direction and true wind speed and direction.
Next steps are to get the display repaired, the two instruments connected and then connect both to my Garmin 740S plotter. After that I want to buy the Garmin Sounder so the 740S can work like a sounder / fishfinder.
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY
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