Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 377Get this manual

REMOTE CONTROL TYPE: (Power trimftilt type)
To METER HARNESS

BATTERY
NOTE: Install the battery dry and well ventilated
locationMinimum requirements: 12 NEGATIVE (-1 TERMINAL POSITIVE (+I TERMINAL

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