1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 97Get this manual

CHARGING AND STARTING SYSTEM
Plug Harness (Battery Charging Kit)
Installation
1Install plug harness through fuel fitting opening in bottom cowl2Route harness along PORT side of engine to rectifieraHarness

3Refer to Section 2D for wiring connections

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