Clarion APA4203 Operation & Installation Manual page 16

Clarion APA4203/APA4I62
INSTALLATION
Wiring Precautions (Continued)
♦ Add an external fuse on the positive (+) power lead and connect it as
close as possible to the vehicle's (+) battery terminal. Use a rating that
equals the total current consumption at full output of all amplifiers in
the system. Adding an external fuse will protect the electrical system
from short circuits that can cause a fire.
♦ When replacing the amplifier's fuse, always use one having the same
current rating. Substituting a higher-rated fuse can reduce protection
and may result in serious damage to the amplifier.
♦ Never ground the speakers to the vehicle chassis or body.
♦ Make sure that your vehicle's electrical system (i.e., alternator, battery,
etc.) is capable of handling the additional load. If you are planning a
multi-amplifier system, you may need to add a second battery and
possibly upgrade the alternator with a higher-output-rated model.
Consult your authorized Clarion dealer for recommendations.
♦ To avoid possible noise problems, run the amplifier's positive (+)
power lead along one side of the vehicle to the battery. Run the remote
turn-on wire and RCA audio cables down the center, and route the
speaker wires along the remaining side. If wires must cross, run them
perpendicular to each other.
♦ When creating passage holes for the power wire, use grommets to
eliminate any sharp edges created during drilling. This will protect the
wire from being nicked and causing a short circuit.
♦ Extra cable can cause signal loss and act as an "antenna" for noise. Use
only high-quality RCA cables that are no longer than necessary to make
a direct connection with the source unit or equalizer.
♦ Depending on the type of system being installed, refer to the examples
in Figures 5 through 10 (starting on page 8) for information on wiring
and setting the operation mode.
16 ♦ Installation