33
4. Battery
• One battery is required for each of the engines in the case of quadruple engine installation as the same
manner for the other multiple engine installation.
• Connect the negative battery terminals of all batteries together to maintain the BCM power source in the
case of multiple engine installation.
• Use a negative cable mentioned above with AWG 2 or larger thickness (lower gauge number) to connect
the negative terminals of each engine batteries.
NOTE:
In multiple-motor installation, to maintain the BCM power source, all of the negative battery terminals should
be connected together.
5. System Wiring
Refer to page 55, 57 for the wiring of the system.
6. Electronic Calibration for the System
The electronic calibration is the same way as for the dual engine installation with single station and the dual
engine installation with dual station. In other words, the electronic calibration for quadruple engine installa-
tion is equal in two times of that for dual engine installation.
• Calibrate the group of port and port center engines first then the group of starboard and starboard center
engines.
• Or calibrate the group of starboard and starboard center engines first then the group of port and port cen-
ter engines.
Failure to follow these instructions may cause the wire to overheat and a fire may result.
Use a cable with AWG (American Wire Gauge) number 2 or larger thickness (lower gauge num-
ber) to connect the negative battery terminal.
Battery
12V 130AH
Battery
1 Positive battery cable
2 Negative battery cable
3 Sub battery cable
4 Sub battery cable
5 Cable connecting negative -
terminals of battery
12V 130AH
Outboard
motor
STBD
center
Outboard
motor
STBD
Battery
12V 130AH
Battery
12V 130AH
Outboard
motor
PORT
Outboard
motor
PORT
center
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