2004 SR Johnson 2 Stroke 9.9, 15, 25, 30 HP Outboards Service Manual, Page 92Get this manual
ELECTRICAL ELECTRIC STARTER TESTS
TYPICAL 1Battery positive (+) 2Battery negative (-) 3Rectifier terminal ground 4Start switch connection 5Powerhead ground 6Start switch output lead 7Start button 8Starter terminal 9Pinion