2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Manual, Page 66Get this manual
IGNITION AND ELECTRICAL TESTING IGNITION SYSTEM INSTALLATION
Installation is reverse order of removal with special attention to the following steps See WIRE ROUTING section(Page 3-5,3-13)NOTE: Apply Nut Lock to the coil and stator base securing screwsNOTE: Clean flywheel and crankshaft mating surfaces with cleaning solvent