Installation Guide

breaker or similar switch, so you can disconnect the trickle-
power draw from the yellow wire and avoid draining the battery
during storage.
If you do not have the option of, or prefer not to use the ignition
to turn the stereo on and off, you can connect the red wire and
the yellow wire to the same switch on an electrical panel. This
installation method results in a slightly longer startup time for the
stereo, but it will not draw power from the battery when the
stereo is turned off using the switch.
You must connect the power wires to the battery through a 15 A
fuse or a 15 A circuit breaker.
If it is necessary to extend the yellow power and black ground
wires, use 14 AWG (2.08 mm
2
) wire. For extensions longer than
1 m (3 ft.), use 12 AWG (3.31 mm²) wire.
If it is necessary to extend the red ignition wire, use 22 AWG
(0.33 mm
2
) wire.
1
Route the yellow power
, red ignition , and black ground
wires to the battery, and route the wiring-harness plug to
the stereo.
Do not connect the wiring harness to the stereo until all of the
bare wire connections have been made.
2
Connect the black wire to the negative (-) battery terminal.
3
If you are routing the red wire through the ignition or another
manual switch
, connect the red ignition wire to the ignition
or switch.
4
Connect the red wire to the yellow wire, install a 15 A fuse
as close to the battery as possible, and connect both wires to
the positive (+) battery terminal.
NOTE: If you are running the red wire through a fused switch,
it is not necessary to connect the red wire to the yellow wire
or to add an additional fuse to the red wire.
If you connect both the red and yellow wires through a 15 A
circuit breaker, it is not necessary to add an additional fuse.
5
Connect the wiring harness to the stereo.
Speaker Zones
You can group speakers in one area into a speaker zone. This
enables you to control the audio level of the zones individually.
For example, you could make the audio quieter in the cabin and
louder on deck.
You can connect one 4 Ohm speaker per channel of each zone.
One zone can support no more than two 4 Ohm speakers using
the on-board amplifier. To use the RCA line outputs and the
RCA subwoofer outputs, you must connect an external amplifier.
You can set the balance, volume limit, tone, subwoofer level,
subwoofer frequency, and name for each zone, and configure
other zone-specific settings.
Single-Zone System Wiring Example
Speakers
Water-tight connection
Speaker System Wiring Using a Line Out
This diagram illustrates a system installation with an external
amplifier and subwoofer connected to zone 2 on the stereo
using a line out. You can connect an amplifier and subwoofer to
any or all of the available zones on the stereo.
NOTE: You can connect speakers to the speaker wires for the
internal stereo amplifier while using the line out on zones 1 and
2, although adjusting the volume affects both the speakers
connected to the internal amplifier and the line out. This may
result in uneven volume levels.
Zone 1 speakers
Water-tight connection
Zone 2 speakers
Amplifier-on signal wire
You must connect this wire to each amplifier connected to a zone
line out.
A connected amplifier must use the same ground (-) as the stereo
for this signal wire to function correctly.
Powered amplifier connected to the zone 2 line out
Zone 2 line out and subwoofer out
Each subwoofer cable provides a single mono output to a powered
subwoofer or subwoofer amplifier. You may need to use an RCA
splitter to connect this to an amplifier.
Subwoofer
Connecting a SiriusXM Tuner Module
This device is compatible with a SiriusXM SXV300 or newer
vehicle tuner module.
1
If you have already connected a USB source, a NMEA 2000
cable, or both, disconnect them from the stereo.
2
Connect the cable from the SiriusXM tuner module to the
SXM TUNER port on the back of the stereo.
3
If necessary, reconnect the USB source, the NMEA 2000
cable, or both.
4
Complete the stereo installation.
MS-RA210 Installation Instructions 3