Combine a Garmin transom mount scanning transducer with a Garmin or Airmar in-hull mounted transducer. Use this Y-cable to connect a 12-pin SideV/Clearv-only transducer along with an 8-pin 2D-only transducer into a single 12-pin (orange) port on a Garmin SideV equipped sonar. This adapter cable allows compatible ECHOMAP, GPSMAP or STRIKER family sonar products to continue to display water depth from the in-hull transducer in instances when the transom mount transducer loses depth reading due to excess speed or cavitation.Learn More.