Federal Signal Corporation 660100, Installation And Maintenance Manual

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Chapter 3: Connecting the PA300-CN System
20
PA300-CN Siren Amplifier
Connections for Horn Ring Transfer (Cable Assembly P/N 1461907)
The default setting for the slide switch transfers the horn-ring activation of the siren amplifier in
Slide Switch 2 and 3 . In Slide Switch 2 , a press of the horn button activates the Manual tone. In
Slide Switch 3 , each press of the horn button cycles through siren functions. In addition, the default
configuration for Slide Switch 3 is Siren Dependent Enabled , which restricts siren activation to the
slide switch position the you select. For example, if you press a button that is assigned a siren tone,
the tone only activates when you place the slide switch in the position that is programmed to be Siren
Dependent Enabled .
To enable horn-ring control of siren tones, obtain a SPST relay of enough contact-current capacity to
activate the vehicle horn:
1. Cut the wire that connects the switch for the vehicle horn ring to the horn or horn relay (Figure
3.6).
2. Splice the WHITE/YELLOW wire from the cable assembly (P/N 1461907) to the horn ring side of
the wire that you cut in step 1. Extend wiring with an 18 AWG lead or thicker.
Figure 3.6 Connections for horn-ring transfer circuit
SW
VEHICLE HORNS
STEERING
COLUMN
SPST RELAY
(INSTALLER-SUPPLIED)
CUT
WIRE
WHITE
18 AWG
WHITE/YELLOW
18 AWG
TO HORN OR
HORN RELAY
TO HORN RING
TO HORN RING
SIDE OF
CUT WIRE
29oA6792