SECTION - 6 DRIVE SYSTEM AND ENGINE INSTALLATION
90-899883183 DECEMBER 2007 Page 33 / 54
Power Trim Electrical Connection
ABYC (American Boat and Yacht Council) installation recommends installing a battery switch in
the positive conductor of any battery or battery bank with CCA rating greater than 800 amperes.
(See ABYC for additional information)
ABYC further recommends, if a boat is equipped with a battery switch, the power trim pump may
not be connected to the continuously energized circuit (battery). It must be connected to the
switched side of the battery switch. Wire length requirements and location of circuit protection are
also specified.
MerCruiser has developed three methods to facilitate compliance with ABYC recommendations.
These come in the form of one standard production and two accessory kits.
• Installations with the batteries (or battery banks) rated at less than or equal to 800 Cold
Cranking Amps (CCA) and without battery switches: The trim pump may be installed using
the wires supplied with the power trim pump and should be connected directly to the battery.
• Installations with batteries (or battery banks) rated at more than 800 CCAs (requiring a battery
switch) or any boat with a battery switch:
a. The red current conductor (for the trim pump) must be connected to the switched side
of the battery switch and either:
• provided with circuit protection within 7 inches of the power source or
• Provided with circuit protection within 40 inches of the point of connection with the
power source and sheathed the entire length of wire from the point of connection to
the source and the circuit protection device. This will require the use of an Accessory
cable kit.
Accessory Part Numbers
Part Number Description Color Length Type
8M2000587 Cable Assembly – Trim Pump Red 72 inches Fused
8M2000588 Cable Assembly – Trim Pump Red 40 inches Sheathed
Power Trim Pump Connections
1. Connect power trim pump BLACK (–) battery cable to negative (–) battery terminal and pump's
RED (+) battery cable to positive (+) battery terminal or to the switched side of the battery
switch.
a
b
6842
a - Positive battery lead b - Negative battery lead
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