2004 SR Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 62Get this manual
IGNITION AND ELECTRICAL TESTING IGNITION SYSTEM IGNITION COIL
COIL RESISTANCE Measure: Coil resistance
Digital tester Tester selector:
1Disconnect coil wires
2Remove plug capsPrimary side
Tester probe connection CB (Red) (Black) Black Orange Coil resistance;
Secondary side
Tester probe connection CB (Red) (Black) Other HT cord HT Coil resistance;
If out of specificationReplace