I have been using OpenCPN for a couple years and now intend to install GRadar. Can anyone explain why the photo I found on the forum does not seem to agree with the Amphenol spec sheet for pin 5? Has the adapter been updated since the photo? Thanks.
In my case, the confusion stemmed from the fact that the garmin HD18 installation instructions (and other sources on the web) identify the brown wire as pin #8 (which would make the schematics above correct and the photo incorrect).
Other than that, the plugin works like a charm. Kudos to the opencpn folks!