Electrical Systems; Dual Engine - Triple Battery Sys Tem; Installation - Four winns 338 Vista Owner's Manual

H - 1 GENERAL
All electrical equipment on the Four Winns 338 Vista
models operates on 12 volts DC or 120 volts (220 volts
on 50 Hertz models) AC electrical power. The 338
Vista is equipped with a triple battery system along
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with dockside power (including battery charg er) as
standard features. Batteries are located in the engine
compart ment.
Fire or Explosion Hazard!
Electrical system parts are designed by and
manufactured to comply with the US Coast
Guard requirements to minimize risks of fire
or explosion. Never substitute automotive
parts for marine parts. Automotive parts do
not provide the necessary ignition spark
protection.
DO NOT tamper with any electrical con nection,
panel or harness, or attempt installation of any
electrical equipment unless thoroughly familiar
with the sys tems and experi enced in making
such instal lations.
Circuit breakers are installed on the battery switch to
protect various system com ponents. The SHIP SYS-
TEMS breaker supplies power to all DC electrical
com ponents except the aft and forward bilge pumps,
ignition, and instrumentation. Additional breakers are
located in the cabin circuit breaker panel. The circuit
breakers and fuses are labeled for amperage and use.
A helm circuit breaker panel is located underneath the
helm seat. These circuit breakers provide additional
protection for certain component wiring which are
identified on the panel itself. See Figure H1.
Figure H1: Helm Circuit Breaker Panel
Electrical Systems - Section H
H - 2 DUAL ENGINE - TRIPLE BATTERY
SYS TEM
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Two battery selector switches are installed on dual en-
gine, triple battery installations. This allows DC power
to be used from any of the three batter ies.
A. Installation
1. Connect each of the red (positive) battery cables
lead ing from the battery selector switch to the
positive (+) terminal on each of the three batter ies.
Refer to Figure H2.
Be sure all three red (positive) cables are
installed on the positive (+) battery termi nals.
2. Connect each of the black (negative) battery
cables leading to the engine block to the negative
(-) battery terminals on each of the three batteries.
Battery Isolator
Batteries
Figure H2: Battery Location
B. Opera tion
Power to the engines and all 12 volt electrical equip-
ment is controlled at the battery selector panel. On the
338 Vista models, sepa rate breakers are provided on
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the battery selector switch panel to protect the stereo,
windlass, forward and aft bilge pump, high level alarm,
hatch lift, battery outputs, and ship systems.

Electrical Systems

NOTICE
Battery Charger
Owner's Manual Page 69
Bus Bar