Page 3
BATTERY
CHASSIS
GROUND
WPA
TM
WATER-PROOF
AMPLIFIER
BRN
ORG
-
SPEAKER
+
VEHICLE
HORN
CUSTOMER SUPPLIED
(SINGLE POLE/SINGLE THROW
& MOMENTARY)
SWITCHES
10 AMP FUSE (12V installation)
7.5 AMP FUSE (24V installation)
(CUSTOMER SUPPLIED)
HORN TRANSFER SWITCH
(CUSTOMER SUPPLIED)
SPDT
WHT/GRN (Horn Ring)
RED/WHT (Aux. Power)
WHT/BRN (Wail Tone)
WHT/RED (Yelp Tone)
WHT/ORG (Hands-Free)
WHT/YEL (Airhorn)
WHT/VIO (Push To Talk)
WHT/BLU (MIC +)
WHT/BLK (MIC -)
BLK
RED
BLU
TWO-WAY
RADIO SPEAKER
CONNECTED IN PARALLEL
BLU
+
-
TO
HORN
RELAY
OUTPUT
CUT
HERE
-
+
Wiring The WPA™ Series Waterproof Amplifier To The Controls
If the WPA
M
series control head (optional) is not used, siren configuration and functionality are determined by user supplied switches
connected to the WPA amplifier. A brief explanation of each of the function wires will serve as a guide to help determine the best
configuration for your specific needs (see table 1):
RED/WHITE Provides current for customer
supplied switch operation (0.5 amp
max).
WHITE/GREEN Connects to a user supplied horn
transfer switch (see Figure 1). This
enables the vehicle horn ring to
control the siren.
WHITE/BROWN Activates the Wail tone.
WHITE/RED Activates the Yelp tone.
WHITE/BROWN +
WHITE/RED Activates Piercer™ tone.
WHITE/ORANGE Enables Hands-Free operation.
WHITE/YELLOW Activates Airhorn tone.
WHITE/RED +
WHITE/ORANGE Places WPA in Manual Mode. Applying +12VDC to these wires will activate a tone that rises in pitch to a
preset level.
WHITE/BROWN +
WHITE/RED +
WHITE/ORANGE Places WPA in Radio Mode. In this mode any signal that is received by the vehicle’s two-way radio will be
simultaneously broadcast over the vehicle’s loud speaker.
Table 1
The installation of your WPA Series siren amplifier will be complete after the fuse block wire is
connected to the POSITIVE (+) terminal of the battery. After this connection has been made,
inspect the fuses at the amplifier and at the battery. If either of these fuses are blown,
carefully inspect all of the circuit wires and make sure they are wired correctly. Replace the
blown fuses with one of an identical amp rating as the original. If these fuses blow after
installation or activation, contact Whelen Engineering Technical Support.
Fig. 1
CAUTION
Loud siren noise can cause
hearing damage and/or loss.
Refer to OSHA Section 1910.95 prior
to putting ANY siren into service!
Wear
Protection!
ACTIVATION OF THIS
SIREN MAY DAMAGE
UNPROTECTED EARS!
+ Battery
Terminal
+ Battery
Terminal
+ Battery
Terminal
+ Battery
Terminal
+ Battery
Terminal
+ Battery
Terminal
+ Battery
Terminal
WAIL
WHITE/YELLOW
WHITE/ORANGE
WHITE/RED
WHITE/BROWN
WHITE/BROWN
&
WHITE/RED
WHITE/BROWN
&
WHITE/RED
&
WHITE/ORANGE
WHITE/RED
&
WHITE/ORANGE
HANDS-FREE
MODE
YELP
AIRHORN
MANUAL
MODE
RADIO
MODE
PIERCER™
TONE CONTROL
TABLE
(2 pages)
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