Brunswick 750 IMPACT, Operation & Maintenance Manual

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4-13
Boat Systems Section 4
Battery Parallel Switch
Your boat is equipped with an emergency battery par-
allel switch. The switch is located on the control con-
sole face. You can use the emergency battery parallel
switch to connect the two engine starting batteries in
parallel if one engine will not start due to low battery
voltage.
The battery parallel switch controls a solenoid that
connects the two engine starting batteries. The switch
is a three-position rocker switch that is ON-OFF-ON.
The center switch position is OFF. Both the left and
right switch positions are momentarily ON when held
down. When you release the switch, it will return to
the center OFF position.
If one of your outboard engines will not start due to low
battery voltage, use the emergency battery parallel
switch to provide power from the other starting battery.
Push and hold the battery parallel switch ON to either
the left or right position. Note this position. Hold the
battery parallel switch in the ON position and try to
start the engine.
If the engine does not start, release the battery parallel
switch to the OFF position. Move the battery parallel
switch to ON in the opposite direction. Hold the bat-
tery parallel switch in the ON position and try to start
the engine.
The emergency battery parallel system is protected by
two 10-amp in-line blade fuses wired to the load sides
of both engine battery OFF-ON switches. The two in-
line blade fuses protect the electrical wiring between
the solenoid and battery parallel switch.
Periodically check the condition of the two 10-amp in-
line blade fuses located next to the parallel solenoid.
One blown fuse would not allow the battery parallel
solenoid to function in one switch position.