1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 64Get this manual

IGNITION
SPARK PLUG CAP RESISTOR TEST

METER TEST LEADS RED WIRE END BLACK PLUG END

METER SCALE RX1K

READING (W) 3.55.2

IGNITION COIL (SECONDARY)

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives