-5-
Figure 3-2. Rear View of PA300.
Figure 3-3. Control Cable Wiring Diagram.
CAUTION
To avoid damage to the unit, the 1/4-20 x 1/2
hex head cap screws and the 1/4 split
lockwashers must be used as shown in figure
3-1.
E.
Tilt the unit to the desired position.
Tighten the 1/4-20 x 1/2 hex head screws.
3-3. POWER CABLE INSTALLATION.
CAUTION
Wiring changes have been made which
utilizes a new type of power cable. If this unit
is used to replace an older PA300, use the
optional cable adaptor (761300) to connect the
originally installed power cable to the new
siren.
A.
Speaker.
The unit is designed to operate with one 11-
ohm impedance speaker or two 11-ohm impedance,
low power (58W) or high power (100W), speakers
connected in parallel and inphase. On FEDERAL
speakers, this can be accomplished by connecting the
two speaker leads marked "1" to the SPEAKER
COMMON control cable lead and the two speaker
leads marked "2" to the SPEAKER HIGH POWER or
SPEAKER LOW POWER control cable leads. See
figure 3-3.
CAUTION
Damage to the unit will occur if speaker wires
are improperly connected. NEVER CON-
NECT the brown SPEAKER HIGH POWER
(100W) wire and orange SPEAKER LOW
POWER (58W) wire together to the
speaker(s).
Using 18 gauge wire, connect the speaker
leads (58W speakers to SPEAKER LOW POWER and
100W speakers to SPEAKER HIGH POWER) as
shown in the Control Cable Wiring Diagram, figure
3-3.
B.
Radio.
To allow incoming radio messages to be
rebroadcast over the outside speakers, connect the
two brown zip cord leads (pins 1 and 2) across the
two-way radio’s speaker.
C.
Horn Ring.
In order to utilize the Tap II and Press-and-
Hold features of the siren, the following procedure
must be performed.
1.
Locate the wire that connects the
vehicle horn ring switch to the horn or horn relay.
Cut this wire.
2.
See figure 3-4. Splice the white/yellow
control cable wire (pin 4) to the horn ring side of the
wire that was cut in step 1. Insulate the splice with
user-supplied wire nuts.
CAUTION
The horn ring transfer circuit of the siren is
capable of switching a maximum of 2-am-
peres. Some vehicles do not have a horn relay
and, consequently, will draw more than 2-
amperes when the vehicle horn is activated.
Consult your vehicle service manual or a
qualified mechanic to determine the current
required to activate the horn. If it is
less
than 2-amperes, perform the procedure in
step 3. If it is
greater
than 2-amperes,
perform steps 4 through 10.
290A4507-03
ORG (SPKR, LO)
BRN (SPKR, HI)
WHT (HORN)
WHT/YEL (HORN RING)
BRN (RIBBED) (RADIO)
BRN (NON-RIBBED) (RADIO)
ZIP CORD
8
9
5
4
2
1
BLU (SPKR, COM)
7
1
2
3
4
5
6
7
8
9 10
RED (POWER +)
FUSEHOLDER ON 690010 ONLY
BLK (GROUND -)
290A4507-04C
*
*
Summary of Contents for PA300 Series 690009
Page 15: ......
