7
Installation, Maintenance, and Service Manual
Federal Signal
www.fedsig.com
Wiring the Rear ILS in the Vehicle
Wiring the Rear ILS in the Vehicle
Before proceeding, ensure that the light bar has been installed inside the vehicle in
accordance with the instructions included with the mounting kit.
NOTE:
The DIP switch on the control PCB in the light bar provides two selectable options.
To change DIP switch settings, see “Selecting Configuration Options” on page 9.
The light bar is completely wired at the factory and does not require any additional
internal wiring. Two 16 AWG power conductors (red and black) and the CAT5
communication cable exit the light bar. The conductors necessary to control the light bar
are contained in the CAT5 cable, which connects to a compatible Federal Signal control
head or Serial Interface Module.
INSTALLATION PRECAUTIONS: The warning system and/or two-way radio
system may operate improperly if a two-way radio antenna is installed on or
within 18 inches of the light bar. Before permanently installing the light bar or
a two-way radio antenna, test the warning system and two-way radio system.
Some installations may require the relocation of the two-way radio antenna
to the trunk or fender. DO NOT drill holes in the light bar or install auxiliary
devices on the light bar, or the warning system may fail.
LOCATING OPERATOR CONTROLS: The controls for the light system must be
located so that the VEHICLE and CONTROLS can be operated safely under all
driving conditions.
REVERSE POLARITY/MISWIRING: Reverse polarity may damage the siren
amplifier. To avoid damage to the siren/amplifier, ensure that the battery
voltage is the same voltage as the rating of the light and that the correct
polarity is observed.
To wire the light bar in the vehicle:
1.
Ensure that the lines are adequately fused (see Figures 4 through 6 starting on page
17). From the light bar, route the CAT5 control cable into the vehicle’s cab or trunk
near the planned location of a control head that is compatible with the light bar or
Serial Interface Module.
NOTE:
An input cable (24-pin harness) is provided with the Serial Interface Module. For
connections, see Table 1 on page 8 and Figures 4 through 6 starting on page 16.
2.
Connect the 16 AWG black lead to the vehicle battery’s ground (–NEG) terminal.
3.
Connect the 16 AWG red lead through the supplied 15 A fuse at the source to the
positive (+BAT) terminal.
