Garmin GSD20 Sounder Module W/Power Cable - Tested Working - Max Marine Electronics
Amazon.com: Garmin Transom/Trolling Motor Mount Dual Beam Transducer, Standard Packaging
Amazon.com: yourour 010-10272-00 Heavy Duty Transducer Mount Bracket,Transom Mount Bracket Compatible with Garmin Fishfinder,GPSMAP,GSD : Electronics
garmin extension cable for transducers
Amazon.com: yourour 010-12006-11 Heavy Duty Transducer Mount Bracket, Transom Mount Bracket with Spray Sheild Compatible with Garmin Echo, echoMAP, CV,GT,GCV,GPSMAP,GSD 4-pin 8-pin or 12-pin Transducer. : Electronics