Wiring Harness Wire and Connector Identification
Wire Function
Wire Color/
Number
Notes
Antenna
À
Connects the stereo to a typical AM/FM antenna
using an RF coaxial connector.
If you are installing the stereo on a boat with a
metal hull, you must use a ground-dependent
antenna, and if you are installing the stereo on a
boat with a non-metal hull, you must use a
ground-independent antenna. See the
installation instructions provided with your
antenna for more information.
Auxiliary in left
Auxiliary in right
Á
Provides a red and white RCA stereo line input
for audio sources, such as a CD or MP3 player.
Zone 1 line out (left)
Zone 1 line out (right)
Â
Provides a full-range output to an external
amplifier, and is associated with the volume and
tone for zone 1.
Power (+)
Yellow
Connects to the positive terminal of a 12 Vdc
power source capable of supplying 15 A.
Ground (-)
Black
Connects to the negative terminal of a 12 Vdc
power source. This wire should be connected
before connecting the yellow wire. All
accessories connected to the stereo must share
a common ground location.
Amplifier on
Blue
Connects to an optional external amplifier to turn
it on when the stereo turns on.
Dim
Orange
Connects to the boat's illumination wire to dim
the stereo screen when the lights are on.
The gauge of the illumination wire must be
suitable for the fuse supplying the circuit it is
connected to.
Speaker zone 1 left
(+)
White
Speaker zone 1 left
(-)
White/black
Speaker zone 1 right
(+)
Gray
Speaker zone 1 right
(-)
Gray/black
Speaker zone 2 left
(+)
Green
Speaker zone 2 left
(-)
Green/black
Speaker zone 2 right
(+)
Purple
Speaker zone 2 right
(-)
Purple/black
Fuse
Ã
Contains the 15 A fuse.
Connecting to Power
When connecting the stereo to power, you should connect it through the
ignition or another manual switch.
If it is necessary to extend the power and ground wires, use 14 AWG
(2.08 mm
2
) wire. For extensions longer than 1 m (3 ft.), use 12 AWG
(3.31 mm
2
) wire.
1
Route the power wire
À
to the ignition or another manual switch
Á
, and
route the black ground wire
Â
to the battery.
2
If necessary, route a wire
Ã
between the switch and the battery .
3
Route the wiring-harness plug to the stereo.
Do not connect the wiring harness to the stereo until after all of the bare
wire connections have been made.
4
Connect the black wire to the negative (-) battery terminal.
5
Connect the power wire to the ignition or another manual switch, and
connect the switch to the positive (+) battery terminal if necessary.
6
Connect the wiring harness plug to the stereo.
Single-Zone System Wiring Diagram
À
Speakers
Á
Water-tight connection
Complete System Wiring
Item
Description
À
Zone 2 speakers
Á
Water-tight connection
Â
Zone 1 speakers
Ã
Amplifier-on signal wire
2
FUSION
®
MS-RA55 Installation Instructions
