Federal Signal Corporation Spectralux Rear ILS Light Bar Manual

25500022
REV. A3 0920
Printed in U.S.A.
© Copyright 2014-2020 Federal Signal Corporation
Installation, Maintenance,
and Service Manual
Spectralux Rear ILS Light Bar

blank page
Limited Warranty
This product is subject to and covered by a limited warranty,
a copy of which can be found at www.fedsig.com/SSG-Warranty.
A copy of this limited warranty can also be obtained by written
request to Federal Signal Corporation, 2645 Federal Signal Drive,
University Park, IL 60484, email to [email protected] or
call [phone].
This limited warranty is in lieu of all other warranties, express or
implied, contractual or statutory, including, but not limited to the
warranty of merchantability, warranty of tness for a particular
purpose and any warranty against failure of its essential purpose.
2645 Federal Signal Drive
University Park, Illinois 60484-3167
www.fedsig.com
Customer Support
Police/Fire-EMS: 800-264-3578 • [phone]
Work Truck: 800-824-0254 • [phone]
Technical Support 800-433-9132 • [phone]
All product names or trademarks are properties of their respective owners.

3
Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
Table of Contents
Safety Message to Installers and Service Personnel of Warning Light Equipment......................... 5
Introduction............................................................................................................................................. 7
Unpacking the ILS .................................................................................................................................. 7
Wiring the Rear ILS in the Vehicle ........................................................................................................ 7
SignalMaster Option.......................................................................................................................................................8
Lightbar Controls.............................................................................................................................................................8
Typical Installations with Common Control Systems .............................................................................................9
Selecting Configuration Options.................................................................................................................................9
Safety Message to Operators of Warning Light Equipment............................................................. 11
Testing the Lightbar ............................................................................................................................. 12
Maintaining the Rear ILS...................................................................................................................... 12
Cleaning the Shrouds....................................................................................................................................................13
Cleaning the Reflectors ................................................................................................................................................13
Servicing the Rear ILS ......................................................................................................................... 13
Replacing a PCB .............................................................................................................................................................13
Replacing a Reflector ................................................................................................................................................... 15
Ordering Replacement Parts............................................................................................................... 16
List of Tables
Table 1 Rear ILS lightbar controls and their wires from the Serial Interface Module ......................9
Table 2 Rear ILS DIP switch settings..................................................................................................10
Table 3 Common replacement parts...................................................................................................16
Table 4 Vehicle-specic parts..............................................................................................................16
List of Figures
Figure 1 DIP switches and lights on the control board of the Rear ILS ......................................... 11
Figure 2 Removing a PCB................................................................................................................... 14
Figure 3 Removing a reector............................................................................................................ 15
Figure 4 Typical connections with a SignalMaster controller (external control)........................... 17
Figure 5 Typical connections with a SmartSiren Model SS2000SM ............................................... 18
Figure 6 Typical connections with a serial-controlled lightbar and externally controlled SpectraLux
Rear ILS .............................................................................................................................................................19

44 Spectralux®Rear ILS Light Bar
Federal Signal www.fedsig.com
Safety Message to Installers and Service Personnel of Warning Light Equipment
Safety Message to Installers and Service Personnel of Warning Light Equipment
People’s lives depend on your proper installation and servicing of Federal Signal
products. It is important to read and follow all instructions shipped with this product.
Listed below are some other important safety instructions and precautions you should
follow:
Before Installation or Service
Qualifications
• To properly install or service this equipment, you must have a good understanding of
automotive mechanical and electrical procedures and systems, along with proficiency
in the installation and service of safety warning equipment. Always refer to the
vehicle’s service manuals when performing equipment installations on a vehicle.
Light Hazards
• To be an eective warning device, this product produces bright light that can be
hazardous to your eyesight when viewed at a close range. Do not stare directly into
this lighting product at a close range, or permanent damage to your eyesight may
occur.
• Do not install the light system in an area that would block, impair, or blind the driver’s
vision. Ensure that the light system is mounted in a position that is outside of the
driver’s field of vision so the driver can safely operate the vehicle.
• Federal Signal power supplies and light heads are designed to work together as
a system. Combining light heads and a power supply from dierent manufacturers
may reduce the warning eectiveness of the lighting system and may damage the
components. Verify or test your combination to ensure that the system works together
and meets federal, state, and local standards or guidelines.
Electrical Hazards
• Strobe systems present a shock hazard because they use high voltage to operate.
Do not handle strobe cables, power supply, or bulbs or remove the lens while the
equipment is connected. Strobe systems can hold their charge even after they have
been turned o. After disconnecting power to the unit, wait five minutes before
handling any parts of the strobe system.
• A light system is a high current system. In order for the system to function properly,
a separate negative (–) connection and positive (+) connection must be made. All
negative connections should be connected to the negative battery terminal and a
suitable fuse should be installed on the positive battery terminal connection as close
to the battery as possible. Ensure that all wires and fuses are rated correctly to handle
the device and system amperage requirements.
• Never attempt to install aftermarket equipment that connects to the vehicle wiring
without reviewing a vehicle wiring diagram available from the vehicle manufacturer.
Ensure that your installation will not aect vehicle operation or mandated safety
functions or circuits. Always check the vehicle for proper operation after installation.

5
Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
Safety Message to Installers and Service Personnel of Warning Light Equipment
• The lighting system components, especially light bulbs, strobe tubes, LEDs, and the
outer housing, get hot during operation. Disconnect power to the system and allow
the system to cool down before handling any components.
• Do not mount a radio antenna within 18 inches (45.7 cm) of the lighting system. Placing
the antenna too close to the lighting system could cause the lighting system to
malfunction or be damaged by strong radio fields. Mounting the antenna too close to
the lighting system may also cause the radio noise emitted from the lighting system to
interfere with the reception of the radio transmitter and reduce radio reception.
• Do not attempt to wash any unsealed electrical device while it is connected to its
power source.
During Installation and Service
• DO NOT get metal shavings inside the product. Metal shavings in the product can
cause the system to fail. If drilling must be done near the unit, place an ESD-approved
cover over the unit. Inspect the unit after mounting to ensure that there are no
shavings in or near the unit.
• DO NOT connect this system to the vehicle battery until ALL other electrical
connections are made, mounting of all components is complete, and you have verified
that no shorts exist. If the wiring is shorted to the vehicle body or frame, high current
conductors can cause hazardous sparks, resulting in electrical fires or flying molten
metal.
• DO NOT install equipment or route wiring (or the plug in cord) in the deployment path
of an airbag.
• Before mounting any components, check the manual to verify that the component you
are installing is suitable for use in that area of the vehicle. Many components are not
suitable for use in the engine compartment or other extreme environmental exposure
areas.
• When drilling into a vehicle structure, ensure that both sides of the surface are clear
of anything that could be damaged. Remove all burrs from drilled holes. To prevent
electrical shorts, grommet all drilled holes through which wiring passes. Ensure that
the mounting screws do not cause electrical or mechanical damage to the vehicle.
• Refer to the manual packed with the lighting system for proper electrical connections,
additional precautions, and information.
• Because vehicle roof construction and driving conditions vary, do not drive a vehicle
with a magnetically mounted warning light installed. The light could fly o the vehicle,
causing injury or damage. Repair of damage incurred because of ignoring this warning
shall be the sole responsibility of the user.
• To avoid denting the vehicle roof, place the light bar mounting feet as close to the
outer edge of the roof as possible.
• Locate the light system controls so the VEHICLE and CONTROLS can be operated
safely under all driving conditions.

66 Spectralux®Rear ILS Light Bar
Federal Signal www.fedsig.com
Introduction
After Installation or Service
• After installation, test the light system to ensure that it is operating properly.
• Test all vehicle functions, including horn operation, vehicle safety functions, and
vehicle light systems, to ensure proper operation. Ensure that the installation has not
aected the vehicle operation or changed any vehicle safety function or circuit.
• Scratched or dull reflectors, mirrors, or lenses will reduce the eectiveness of
the lighting system. Avoid heavy pressure and use of caustic or petroleum based
products when cleaning the lighting system. Replace any optical components that
may have been scratched or crazed during system installation.
• Do not attempt to activate or deactivate the light system control while driving in a
hazardous situation.
• Frequently inspect the light system to ensure that it is operating properly and that it is
securely attached to the vehicle.
• After installation and testing are complete, provide a copy of these instructions to
instructional sta and all operating personnel.
• File these instructions in a safe place and refer to them when maintaining and/or
reinstalling the product.
Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death.
RETAIN AND REFER TO THESE MESSAGES
Introduction
The Rear SpectraLux ILS is a single-level LED light bar that mounts in the rear window
of the vehicle. It uses ROC (Reliable On Board Circuitry™) technology, and Solaris®S2
reflectors. The light bar operates at a nominal input of 13.6 Vdc (11 Vdc minimum). The
functions of the ILS are controlled through the CAT5 serial communication cable. The
cable connects to either a compatible Federal Signal Serial control head or a Federal
Signal Serial Interface Module (document P/N 8583446). An internal PCB assembly
within the light bar decodes the control data and performs the requested function. With
the Serial Interface Module, the light bar can be activated by Federal Signal light bar
controllers, SignalMaster®controllers, and/or individual low-current switches.
The backbone is a powder coated aluminum shroud. The light bar has 15-foot power and
ground cables and a 25-foot serial cable. Mounting hardware is a configured option. Refer
to mounting instructions supplied with mounting hardware. The light bar has an operating
temperature range of –30°C to +65°C (-22°F to +145°C).
Unpacking the ILS
After unpacking the ILS light assembly, inspect it for damage that may have occurred in
transit. If it has been damaged, do not install it. File a claim immediately with the carrier,
stating the extent of damage. Carefully check all envelopes, shipping labels, and tags
before removing or destroying them. Ensure that the parts listed in kit contents list are
included in the package. If you are missing any parts, contact Customer Support
at 1-800-264-3578, 7 a.m. to 5 p.m., Monday through Friday (CT).

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
amplier. To avoid damage to the siren/amplier, 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.

88 Spectralux®Rear ILS Light Bar
Federal Signal www.fedsig.com
Wiring the Rear ILS in the Vehicle
SignalMaster®Option
The SignalMaster function is configured at the factory and does not require any
additional wiring inside the light bar. All conductors necessary for control of the
SignalMaster are through the compatible serial communication control head or the
Serial Interface Module. For wiring and operation, refer to the instructions included
with the control head or document P/N 2562248 included with the Serial Interface
Module.
Light Bar Controls
Both the Federal Signal Serial Control Head and the Serial Interface Module provide
the controls in Table 1 to the light bar. The table shows the corresponding control
wires from the Serial Interface Module and their colors. The wire’s first color is the
predominant color; additional colors are stripes.
For programming options, see the instructions included with the Interface Module or
the Federal Signal serial control head.
Table 1 Rear ILS light bar controls and their wires from the Serial Interface Module
Light Bar Control* Wire Color Function Description
Mode 1 Blue Lowest priority
Mode 2 Blue/White Overrides Mode 1
Mode 3 Black/Red Overrides Modes 1 and 2
Steady Burn Red/White N/A
Front Cuto󰀨 Green/White N/A
Front Enable N/A
Rear Cuto󰀨 Orange/Black Turns OFF power to the Rear ILS
Rear Enable Turns ON power to the Rear ILS
Intersection Blue/Black N/A
Flash Takedown Red/Black N/A
Left Alley Green/Black N/A
Right Alley Orange/Red N/A
Takedown White/Black N/A
Intersection Blue/Black N/A
Low Power White/Black/Red Dims the lights approximately 50 percent to
prevent blinding approaching drivers. Low
Power is available only in Modes 1 and 2 and is
disabled when switched to another ash pattern,
including Mode 3 and Intersection.
Test Pattern
(SW-2 Switch 3 in the
Serial Interface Module is
in the UP position.
Black/White/Red Cycles through each available color
*See document P/N 2562248 for instructions on setting these options in the Serial Interface
Module.

9
Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
Wiring the Rear ILS in the Vehicle
Typical Installations with Common Control Systems
For typical installations with common control systems, see Figures 4 through 6 starting
on page 16.
Selecting Conguration Options
The Rear ILS has three configuration options that are selectable with DIP switches on
the light bar control board. Table 2 describes the options.
Table 2 Rear ILS DIP switch settings
DIP Switch
Position Description
1 Sets the directional arrow pattern for internal SignalMaster®control for the eight- (default) or six-
head pattern. For the six-head pattern, move DIP Switch 1 to ON (Figure 1 on page 11).
2 Not used
3 Switch 3 has three functions:
• Activating a lower or upper rear mounted ILS
• Performing an LED scan to ensure that an LED board ashes the correct colors after it is
installed.
• Changing the Device ID to enable the SpectraLux®ILS to operate independently of the
light bar (available with the Convergence Conguration Software).
Choosing to Activate an Upper or Lower Rear ILS
To activate an upper rear mounted ILS, set Switch 3 ON.
To activate a lower rear mounted ILS, set Switch 3 OFF.
Performing an LED Scan
When an LED board is changed, an LED scan must be done to enable the LED board to ash the
correct colors.
To perform the scan:
1. Disconnect the red power (BAT+) wire to the SpectraLux ILS and maintain power to the
control head/interface box.
2. Change the position of DIP Switch 3 and turn power ON to the SpectraLux ILS. The
SpectraLux ILS emits a short ash to indicate the LED scan is done.
3. To return DIP Switch 3 to its original function, repeat the scan.
Changing the Device ID
The default setting for the SpectraLux ILS is to respond to light bar commands. For example, if the
system includes a light bar and a SpectraLux ILS, both devices perform the same functions. The
Convergence Conguration programming software enables you to program the control head to
send a set of commands dedicated only to the SpectraLux ILS, making its operation independent
of the light bar.
To reset the control head to the default setting, perform an LED scan as described above.
4 Sets the ability to power the network cable for other devices. The default is OFF. Switch 4 should
only be set if the main power cables are turned on through an ignition-activated relay. If powering
other devices, such as the Six-Button Serial Controller, set DIP Switch 4 to ON. For more
information, see the instructions included with the network-powered device.

1010 Spectralux®Rear ILS Light Bar
Federal Signal www.fedsig.com
Safety Message to Operators of Warning Light Equipment
Figure 1 DIP switches and lights on the control board of the Rear ILS
290A7042
DIP SWITCH
REAR ILS LIGHT BAR
SIX-HEAD SIGNALMASTER
SIX-HEAD SIGNALMASTER
EIGHT-HEAD SIGNALMASTER
EIGHT-HEAD SIGNALMASTER
CONTROL BOARD
Safety Message to Operators of Warning Light Equipment
People’s lives depend on your safe use of our products. Listed below are some important
safety instructions and precautions you should follow:
• Do not attempt to activate or deactivate the light system control while driving in a
hazardous situation.
• Although your warning system is operating properly, it may not be completely
eective. People may not see or heed your warning signal. You must recognize this
fact and continue to drive cautiously.
• Situations may occur that obstruct your warning signal when natural and man-made
objects are between your vehicle and others, such as raising your hood or trunk lid. If
these situations occur, be especially careful.
• The eectiveness of an interior mounted warning light depends on the clarity, the
tinting, and the angle of the glass it is being placed behind. Tinting, dirt defects, and
steeply angled glass reduce the light output of the warning light. This may reduce
the eectiveness of the light as a warning signal. If your vehicle has dirty, tinted, or
steeply angled glass, use extra caution when driving your vehicle or blocking the right
of way with your vehicle.
• All eective sirens and horns produce loud sounds that may cause, in certain
situations, permanent hearing loss. You and your passengers should consider taking
appropriate safety precautions, such as wearing hearing protection.
• In order to be an eective warning device, this product produces bright light that can
be hazardous to your eyesight when viewed at a close range. Do not stare directly
into this lighting product at a close range, or permanent damage to your eyesight may
occur.
• It is important that you fully understand how to safely operate this warning system
before use.
• Operate your vehicle and its light/sound system in accordance with your department’s
Standard Operating Procedures.