2003+ Suzuki DF9.9/DF15 four stroke outboard motors service manual, Page 20Get this manual
GENERAL INFORMATION
PEAK VOLTAGE Requirements for peak voltage measurement Remove all spark plugs to eliminate the variables at cranking speed Crank with recoil starter Use STEVENS peak voltage tester, Model CD-77Tester probe connection(Red)(Black) Orange Green RedBlack Red Black BlackRed Black (Ground) Yellow