<https://www.gpscentral.ca/product/garmin-motorguide-trolling-motor-transducer-adapter-4-pin/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.gpscentral.ca/product/garmin-motorguide-trolling-motor-transducer-adapter-4-pin/>