Connecting the Siren
12
PA4000 Electronic Siren System
Federal Signal
www.fedsig.com
DRILLING PRECAUTIONS: Before drilling holes, check the area into which
you plan to drill to ensure that you do not damage vehicle components. All
drilled holes should be deburred and all sharp edges should be smoothed.
Additionally, all exterior drilled holes must be sealed with Motorcraft seam
sealer T-A-2-B or equivalent to prevent the potential exposure to carbon
monoxide or other potentially harmful fumes. Failure to observe this warning
could cause serious injury or death.
3.
If routing the cable requires drilling a hole in sheet metal or other material, drill a
5/8-inch hole in the material. Install a 5/8-inch grommet (not supplied) or similar
protective device in the hole to protect the cable from damage sharp edges could
cause.
4.
Install the other end of the control cable to the mating connector on the amplifier.
Connecting the Siren
The unit is supplied with an eleven-position connector to perform the electrical
installation. User-supplied, 14-gauge red and black wires are required for the positive
(+) and ground (-) connections. User-supplied, 18-gauge wires are required for the
speaker, radio, horn switch, park switch, backlighting, and case ground connections.
To install a wire in the eleven-position connector, strip 1/4 inch of insulation from the
end of the wire. Then insert the wire into the connector and tighten the screw at the
appropriate connector position.
Speaker
The unit is designed to operate with one 11-ohm impedance speaker (100 W) or two
11-ohm impedance speakers (100 W).
When using one 100 W speaker, use 18-gauge wire and connect the speaker leads to
positions 1 and 2 of the eleven-position connector as shown in Figure 1.
DO NOT WIRE IN PHASE: Improper diagnostic test indications will result
if speakers are connected in parallel.
When using two 100 W speakers, they must be connected in phase. See Figure 1.
On Federal Signal speakers, this can be accomplished (using 18 gauge wire) by
connecting the two speaker leads marked “2” to position 1 of the eleven-position
connector. Connect one of the speaker leads marked “1” to position 2 of the eleven-
position connector. Connect the other speaker lead marked “1” to position 3 of the
eleven position connector.
