Electrical System; General; 12-Volt System - Monterey M3 Owner's Manual

Chapter 6:

ELECTRICAL SYSTEM

6.1 General

Your Monterey is equipped with a 12-volt DC
electrical system and could be equipped with an
optional 120-volt AC battery charging system. The
battery charger draws current from a shore power
outlet at dockside. The DC system draws current
from one or two onboard batteries.
Your boat and engine charging system is designed
for 12-volt, lead acid wet cell marine batteries.
They will require similar maintenance as those
found in automobiles.
All wires in the electrical system are color coded to
make identifying circuits easier. Wiring schemat-
ics have been included with this manual to aid in
following an individual circuit of the boat.

6.2 12-Volt System

The 12-volt system is a standard marine system.
One battery with an ON - OFF switch is standard
equipment. A dual battery system is optional
on the M3 and M5 models and standard on MSX
models.
The batteries are located in the engine compart-
ment, forward of the engine. The single battery
system is controlled by an ON - OFF switch and
dual batteries are controlled by an OFF - 1 - 2 - 1
& 2 battery selector switch located in a compart-
ment near the transom door. The batteries can be
charged by the engine or by the optional battery
charger when hooked to shore power.
All 12-volt power is distributed to the 12-volt
accessories through individual circuit breakers
located in the 12-volt breaker panels.
helm circuit breaker, located near the battery
switch, protects the system from an overload.
Other circuit breakers, located near the selector
switch, protect the circuit for the automatic float
switch for the bilge pump, aft seat and ignition.
Optional, heavy duty breakers protect the cir-
cuits for the optional boat and tower amplifiers.
Most 12-volt accessories are operated directly by
switches in the helm accessory switch panels or
separate accessory switch panels.
A main
M3 Single Battery Switch Panel with Circuit Breakers and
Engine Hatch Battery Jumper Terminals
Main breakers located on the engine protect the
ignition, charging system and gauges. Some 12-
volt accessories are operated directly by a circuit
breaker in the breaker panels while others are
operated by a switch fed by the panel breakers.
Most of the 12-volt accessories on the deck and in
MONTEREY
BOATS
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