Vexilar Sonar S-Cable 183603. It helps reduce clutter from debris in weedy conditions too. Installation is as simple as plugging it into your transducer jack then plugging your transducer into the other end of the S-Cable. Specifications for Vexilar Sonar S-Cable: Manufacturer: Vexilar Color: Black Features of Vexilar Suppression Cable for All FL-Series: Reduce output power for improved shallow water depth readings Compatible with all Vexilar depth finders. Hand built in the USA Output power reduction: 50percent 6 inch length Package Contents: Vexilar Sonar S-Cable Vexilar 183603: Sonar S-Cable