Battery And Charging; Wiring The System - Rockford Fosgate Power 250M Einbau Und Betrieb

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NSTALLATION

BATTERY AND CHARGING

Amplifiers will put an increased load on the vehicle's battery and charging system. We recommend
checking your alternator and battery condition to ensure that the electrical system has enough
capacity to handle the increased load of your stereo system. Stock electrical systems which are in
good condition should be able to handle the extra load of any Rockford Fosgate amplifier without
problems, although battery and alternator life can be reduced slightly. To maximize the performance
of your amplifier, we suggest the use of a heavy duty battery and an energy storage capacitor.

WIRING THE SYSTEM

CAUTION: If you do not feel comfortable with wiring your new unit, please see
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your local Authorized Rockford Fosgate Dealer for installation.
CAUTION: Before installation, disconnect the battery negative (-) terminal to
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prevent damage to the unit, fire and/or possible injury.
CAUTION: Avoid running power wires near the low level input cables, antenna,
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power leads, sensitive equipment or harnesses. The power wires carry
substantial current and could induce noise into the audio system.
1. Plan the wire routing. Keep RCA cables close together but isolated from the amplifier's power
cables and any high power auto accessories, especially electric motors. This is done to prevent
coupling the noise from radiated electrical fields into the audio signal. When feeding the wires
through the firewall or any metal barrier, protect them with plastic or rubber grommets to
prevent short circuits. Leave the wires long at this point to adjust for a precise fit at a later time.
2. Prepare the RED wire (power cable) for attachment to the amplifier by stripping 1/2" of
insulation from the end of the wire. Insert the bared wire into the B+ terminal and tighten the set
screw to secure the cable in place.
NOTE: The B+ cable MUST be fused 18" or less from the vehicle's battery. Install the fuseholder under
the hood and prepare the cable ends as stated above. Connections should be water tight.
3. Trim the RED wire (power cable) within 18" of the battery and strip1/2"of insulation from the
end of the wire. Cut the wire loop that is attached to the fuseholder in half and splice the fuse
into the power line using appropriate inline connectors. Use the section of cable that was
trimmed earlier and connect it to the other end of the fuseholder.
4. Strip 1/2" from the battery end of the power cable and crimp a large ring terminal to the cable.
Use the ring terminal to connect to the battery positive terminal. DO NOT install the fuse at
this time.
5. Prepare the BLACK wire (Ground cable) for attachment to the amplifier by stripping 1/2" of
insulation from the end of the wire. Insert the bared wire into the GND terminal and tighten the
set screw to secure the cable in place. Prepare the chassis ground by scraping any paint from
the metal surface and thoroughly clean the area of all dirt and grease. Strip the other end of the
wire and attach a ring connector. Fasten the cable to the chassis using a non-anodized screw
and a star washer.
6. Prepare the REM turn-on wire for connection to the amplifier by stripping 1/2" of insulation from
the wire end. Insert the bared wire into the REM terminal and tighten the set screw to secure the
cable into place. Connect the other end of the REM wire to a switched 12 volt positive source.
The switched voltage is usually taken from the source unit's accessory lead. If the source unit
does not have this output available, the recommended solution is to wire a mechanical switch
in line with a 12 volt source to activate the amplifier.
7. Securely mount the amplifier to the vehicle or amp rack. Be careful not to mount the amplifier
on cardboard or plastic panels. Doing so may enable the screws to pull out from the panel due
to road vibration or sudden vehicle stops.
8. Connect the source signal to the amplifier by plugging the RCA cables/high level inputs into the
input jacks at the amplifier.
9. Connect the speakers. Strip the speaker wires 1/2" and insert into the speaker terminal and
tighten the set screw to secure into place. Be sure to maintain proper speaker polarity. DO NOT
chassis ground any of the speaker leads as unstable operation may result.
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