25XP Harness to Seaward Helm Pod
Original manual page 58
25XP Harness to Seaward Helm Pod. Note 1, tachometer calibration: for 2GM/3GM (97 teeth) set tester switch to 3200. Adjust the "tach cal screw" to indicate 2000 RPM. Wire colors and functions include: black 14 AWG (ground); red 10 AWG (battery +); white/black 16 AWG (temperature); orange 16 AWG (tachometer); pink 14 AWG (fuel tank); red/black 16 AWG (alternator excitor); white 10 AWG (starter); purple 14 AWG (preheat); yellow/white 16 AWG (oil pressure).