Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 256Get this manual
456 (4-Stroke) Wiring Diagram
1Lighting Coil (Optional) 2Crank Position Sensor 3Light Extension Harness (Optional) 4Connection To 12 Volt Battery (Optional) 5Rectifier (Optional) 6Fuse 10 Amp (Optional) 7Ignition Coil 8CDI Unit 9Stop Switch 10Oil Lamp 11Oil Pressure Switch 12Ignition Charge Coil 5