SA-400-10 Installation and Operating Instructions Page 5 of 8
CP4825C 06/06/05
ELECTRICAL CONNECTIONS
Electrical connections to the unit are made using
the wiring harness supplied. If the unit needs
service the connector can be easily removed
without unwiring the harness.
The power supply of the unit must be capable of
delivering peak currents up to 50 amps for ade-
quate short circuit protection and reliable opera-
tion. The preferred source is directly at the vehi-
cle battery. A fuse on the rear of the unit protects
from overload.
Disconnect vehicle battery before making any
electrical connections.
Extend leads using adequately sized wiring and
terminals or splices.
Wire Size and Termination - The diagram shows
the minimum wire size used for each connection,
along with recommended lead color. If the wire is
longer than 10 ft. use the next larger wire size.
Use only high quality crimp connectors for instal-
lation on the vehicle.
Negative Connection (Black) - Both leads must be used. Connect to the negative battery con-
nector or to chassis ground.
Positive Connection (Red) - Both leads must be used. Connect to the positive battery connector
or to a high current power buss. A power relay may be used.
Speaker Connection (Brown) - Both leads must be used. Connect 1 lead to each terminal or
lead of the speaker. When used with 2 speakers connect each brown lead to both speaker termi-
nals or leads (parallel circuit). Observe polarity (phasing) when connecting 2 speakers.
Radio Input Connection (Blue) - Connect 1 lead to each terminal of the radio speaker or output
connector. The input is isolated and polarity is not important.
Auxiliary Input Connection (White) - The Auxiliary Input allows activation by an external source
of the Siren push button function. See OPTION SWITCHES section for further details.
Traditional Auxiliary Input Connection - The auxiliary input is acti-
vated with positive (+VDC) AND negative (-VDC). A normally open horn
ring circuit or switch is required for proper operation. If a normally open
circuit is not used the auxiliary input will constantly be activated. If this is
the case, a diode must be placed in series with auxiliary input to block
the normally off state. The adjacent diagram shows a horn ring connec-
tion example. See OPTION SWITCHES section for further details.
NOTE: Permanent disconnection of the vehicle horn is NOT recom-
mended.
Polarity Selectable Auxiliary Input Connection - The auxiliary input may be activated with posi-
tive (+VDC) OR negative (-VDC). The adjacent diagram shows three connection examples.
See OPTION SWITCHES sec-
tion for programming details.
NOTE: Permanent disconnec-
tion of the vehicle horn is NOT
recommended.
TRADITIONAL
HORN RING
CONNECTION
HORN
RING
SWITCH
AUX
Added
SPDT
Switch
HORN
WIRING HARNESS CONNECTIONS
(2) #18 AWG BRN
(#16 - 2 SPKR)
2 - SPKR - Connect for
same phase (+ to +)
#18 AWG WHT (See below)
(2) #18 AWG BLU
Connect to output
jack, terminals or
speaker of radio
#14 AWG RED
Use both leads
Extend with #12
#14 AWG BLK
Use both leads
Extend with #12
RADIO
+
BAT
-
AUX
CP2560
CABLE
+VDC Switching examples
HORN
RING
SWITCH
+VDC
AUX
SPLICE
HORN
RING
SWITCH
+VDC
AUX
Added
SPDT
Switch
HORN
HORN
-VDC
switching
example
Must set AUX_P
option switch
MOMENTARY
FOOT
SWITCH
AUX
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