1997 Johnson Evinrude "EU" Electric Outboards Service Manual, P/N 507260, Page 23Get this manual
Battery Cable Length The following chart shows the minimum cable size for the listed cable lengthsThis is for stranded copper cable without splicesThe maximum length for the largest cable is 20 ft(6,1 m)INotel These specifications do not apply to aluminum battery cablesave does not recommend the use of aluminum battery cablesBattery Connections Before making any electrical connections, be sure the speed control is turned to the OFF position Some models are equipped with battery clamps or ring terminals to allow direct connection to batteryIf clamps are required, order clamp kit, PIN 390926On 12-volt models, the RED cable should go to the battery positive (+) terminal and the BLACK cable should go to the battery negative (-) terminalOn 1224-models, the RED cable should go to No1 battery positive (+) terminal and the BLACK cable to No2 battery negative (-) terminalThe WHITE 12-volt cable is connected to both the No1 battery negative (-) terminal and the No.2 battery positive (+) terminalOn 24-volt P.W.Mmodels, connect the RED battery cable to the No.1 battery positive (+) terminal and the BLACK battery cable to the No.2 battery negative (-) terminalBattery terminal kit, charger connectors, and No.1 battery-to-No2 battery cable is not included{l