The Marcum Lithium Shuttle Power Adapter offers you the ability to quickly convert your existing sonar system to the Marcum Lithium Shuttle unit. Simply attach the adapter cable to the output power cable on the Marcum Lithium Shuttle and then attach the sonar power terminal cable from your existing sonar system to the Marcum Lithium Shuttle Power Adapter. Follow the instructions provided in your Lithium Shuttle manual for mounting your system to the base platform and youre ready to fish.