Federal Signal Corporation SpectraLux SIFZ Front ILS Manual

25500195
REV. A2 1120
Printed in U.S.A.
© Copyright 2019-2020 Federal Signal Corporation
Installation, Maintenance,
and Service Manual
Models SIFZ Front 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.

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Contents
Safety Messages.............................................................................................................................. 4
Safety Message to Installers and Service Personnel of Warning Lights...........................................4
Safety Message to Operators of Warning Light Equipment.................................................................7
Unpacking the Light Bar................................................................................................................. 9
Introduction to the SIFZ Series SpectraLux..............................................................................................9
Selecting Conguration Options for the Serially-Controlled SIFZ ............................................. 9
Control Wires for the Serial Interface Module ............................................................................ 10
Control Wires for the Discrete-Wire SIFZ ILS ............................................................................. 12
Programming the Discrete-Wire SIFZ ILS ................................................................................... 13
Testing the Serial SIFZ ILS Controls............................................................................................ 13
Wiring the SIFZ ILS in the Vehicle................................................................................................ 14
Maintaining the SIFZ ILS............................................................................................................... 15
Cleaning the Shrouds................................................................................................................................... 15
Cleaning the Domes ..................................................................................................................................... 15
Cleaning the Reflectors................................................................................................................................ 16
Replacing a PCB............................................................................................................................ 17
Getting Technical Support and Service....................................................................................... 19
Getting Repair Service.................................................................................................................................. 19
Ordering Replacement Parts ...................................................................................................................... 19
Figures
Figure 1 DIP switch locations the control boards of the serial controlled ILS .................................... 10
Figure 2 Discrete wire cable on passenger-side....................................................................................... 13
Figure 3 Exploded view.................................................................................................................................... 18
Tables
Table 1 Switch settings on the control board of the serial-controlled ILS........................................... 11
Table 2 SIFZ light bar controls and wires from the Serial Interface Module ..................................... 12
Table 3 Description of SIFZ SpectraLux ILS control wires ..................................................................... 13
Table 4 Discrete-Wire SIFZ light bar controls ............................................................................................ 14
Table 5 Replacement parts............................................................................................................................. 19

4VSIFZ SpectraLux®Split Front ILS Light Bar
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Safety Messages
Safety Messages
For your safety, read and understand this manual thoroughly before installing, operating,
and servicing the light bar. The safety messages presented in this chapter and throughout
the manual are reminders to exercise extreme care at all times. To download copies of the
manual, go to www.fedsig.com or call the Federal Signal Service Department at 1-800-
433-9132, 7 a.m. to 5 p.m., Monday through Friday (CT).
Safety Message to Installers and Service Personnel of Warning Lights
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
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, the power supply, or bulbs or remove the lens while the
equipment is connected. Strobe systems can also 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

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Safety Messages
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.
• 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 of the system.
• Halogen light bulbs and strobe tubes are pressurized and if broken, can burst,
resulting in flying glass. Always wear gloves and eye protection when handling these
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 present in or near the unit.
• To avoid a battery explosion, always disconnect the negative battery cable first and
reconnect it last. Avoid causing a spark when connecting near or to the battery. The
gases produced by a battery can caused a battery explosion that could result in
vehicle damage and serious injury.
• 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.
• If a vehicle seat is temporarily removed, verify with the vehicle manufacturer if the
seat needs to be recalibrated for proper airbag deployment.

6VSIFZ SpectraLux®Split Front ILS Light Bar
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Safety Messages
• Before mounting any components, check the manual to ensure 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.
• The service life of light bulbs and strobes tubes will be shortened if the glass portion
is touched during installation. Use gloves when handling these components. If the
glass portion has been touched, clean the glass carefully with isopropyl alcohol.
• 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 roof of the vehicle, place the light bar mounting feet as close to
the outer edge of the roof as possible.
• Roof damage can occur if the hook adjustment bolts are over-tightened. Tighten the
adjustment bolts 6 ft-lb to 7 ft-lb. Install keeper plates.
• Locate the light system controls so the VEHICLE and CONTROLS can be operated
safely under all driving conditions.
After Installation or Service
• After installation, test the light system to ensure that it is operating properly.
• To ensure proper operation, test all vehicle functions, including horn operation,
vehicle safety functions, and vehicle light systems. 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.

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Safety Messages
• File these instructions in a safe place and refer to them when maintaining and/or
reinstalling the product.
Failure to follow these precautions may result in property damage, serious injury, or death.
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.
• Only operate your vehicle and its light/sound system per your department’s Standard
Operating Procedures.
• If a selected function does not perform properly or if any of the lamps remain illuminated
when the control is o, disconnect the power connector from the control unit and
contact the nearest service center.
• At the start of your shift, ensure that the entire warning light system and the siren
system are securely attached and operating properly.
• Suction cup mounting is for temporary applications only. The unit should be removed
from the window and stored securely when not in use. Temperature changes and
sunlight can cause suction cups to lose holding power. Periodically check the unit to
make sure the suction cups have a firm grip on the mounting surface. An improperly
secured light could fall o of the vehicle, causing injury and damage.

8VSIFZ SpectraLux®Split Front ILS Light Bar
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Safety Messages
• Holding power of magnetic mounting systems is dependent upon surface finish,
surface flatness, and thickness of the steel mounting surface. Therefore, to promote
proper magnetic mounting:
• Keep mounting surface and magnets clean, dry, and free of foreign particles that
prevent good surface contact.
• Ensure that mounting surface is flat.
• Do not use a magnet mounting system on vehicles with vinyl tops.
• To prevent sliding of light assembly on mounting surface, avoid quick acceleration
and hard stops.
Failure to follow these precautions may result in property damage, serious injury, or death.

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Unpacking the Light Bar
Unpacking the Light Bar
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). Disposal of all shipping
materials must be carried out in accordance with national and local codes and standards.
Introduction to the SIFZ Series SpectraLux
The SIFZ SpectraLux®ILS is a single-level LED light bar that mounts on the inside of the
front windshield. It uses ROC (Reliable On Board Circuitry) technology, and Solaris® S2
reflectors. Split, Passenger only, and Driver only are available. The light bar operates at
a nominal input of 13.6 Vdc (11 Vdc minimum). Both Discrete and Serial (Convergence
Network) control are available as configured options.
Discrete models have eight control inputs that connect to the user-supplied low current
switches. Serial models are controlled through the CAT5 serial communication cable.
The cable connects to either a compatible Federal Signal Convergence Network
controller/siren or a Federal Signal Serial Interface Module (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 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 control 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 +149 °F).
Selecting Conguration Options for the Serially-Controlled SIFZ
The serial controlled ILS has three configuration options that are selectable with
DIP switches on the light bar control board. The options are described in Table 1 on
page10.
Figure 1 DIP switch locations the control boards of the serial controlled ILS
DIP Switch
SIFZD Only
DIP Switch
SIFSZ, SIFZP
Driver Side
Passenger Side
Takedown
Takedown
Control
Board
Steady Burn
Red (Option)
Steady Burn
Red (Option)

10 VSIFZ SpectraLux®Split Front ILS Light Bar
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Control Wires for the Serial Interface Module
Table 1 Switch settings on the control board of the serial-controlled ILS
DIP Switch
Position
Function
1 Sets what light heads turn on in Steady Burn. The default position for Switch
1 is OFF, which turns on the third outer heads on both sides of the Front ILS
(Figure 1 on page 10). To turn on the third outer head on the driver side only,
set Switch 1 to ON.
2 Not used
3 Switch 3 has two functions:
• 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).
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.
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 that 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 be set only 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.
Control Wires for the Serial Interface Module
The serially controlled SIFZ SpectraLux ILS connects to a Federal Signal Convergence
Network Siren/Controller or to the Serial Interface Module. Table 2 on page 11 shows
the functions of control wires from the Serial Interface Module. The first color of wire is the
wire predominant color and additional colors are stripes. For programming options, see
the instructions included with the Interface Module or the Federal Signal Convergence
Network Siren/Controller.

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Control Wires for the Serial Interface Module
Table 2 SIFZ light bar controls and wires from the Serial Interface Module
Light Bar Control Wire Color Description of Function
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 One (driver side) or two heads (driver and passenger
side) burn steadily when 12 Vdc is applied to
the control wire for Steady Burn. See “Selecting
Conguration Options for the “Selecting Conguration
Options for the Serially-Controlled SIFZ” on page
9.
Front Cuto󰀨* Green/White Turns OFF power to the Split Front ILS
Front Enable* Turns ON power to the Split Front ILS
Rear Cuto󰀨 Orange/Black N/A
Rear Enable N/A
Intersection (SW-2 Switch
3 in theSerial Interface
Module is in the UP
position)
Scene Light, Left (SW-
2 Switch 3 in the Serial
Interface Module is in the
DOWN position)
Blue/Black Typically a high activity pattern. Overrides all three
priority modes. Scene Light, Left is unavailable.
Applying 12 Vdc to the Scene Light, Left wire turns on
the left half of the light bar. Intersection is unavailable.
Flash Takedown Red/Black Flashes the Takedown lights in Modes 1, 2, and 3
with every ash pattern. To have the Takedown lights
remain o󰀨 and ash only when the Flash Takedown
wire is activated, see “Selecting Conguration Options
for the Serially-Controlled SIFZ” on page 9.
Left Alley Green/Black N/A
Right Alley Orange/Red N/A
Takedown White/Black Provides white light to the front. Overrides Flash
Takedown lights and Front Cuto󰀨.
Low Power White/Black/Red Dims the lights approximately 50 percent to prevent
blinding approaching drivers. Low Power is only
available 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)
Scene Light, Right (SW-
2 Switch 3 in the Serial
Interface Module is in the
DOWN position) Black/
White/Red
Black/White/Red Cycles through each available color. Scene Light,
Right is unavailable.
Applying 12 Vdc to the Scene Light, Right wire turns
on the right half of the light bar. Light Bar Test Pattern
is unavailable.
*To set these options in the Serial Interface Module, see instruction sheet 2562248.

12 VSIFZ SpectraLux®Split Front ILS Light Bar
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Control Wires for the Discrete-Wire SIFZ ILS
Control Wires for the Discrete-Wire SIFZ ILS
The SIFZ SpectraLux ILS is controlled through an eight-conductor discrete-wire cable that
connects to user-supplied, low-current switches.
Figure 2 Discrete wire cable on passenger-side
CAT5 Cable
Orange
Yellow
Black
Light Blue
Light Brown
Red
Light Green
White (Programming)
Table 3 Description of SIFZ SpectraLux ILS control wires
Light Bar Control Wire Color Function
Mode 1 Flash Orange Lowest priority.
Mode 2 Flash Yellow Overrides Mode 1
Takedowns Black Applying +12 Vdc provides white light to the front.
Overrides ashing lights
White Flashing Light Blue When calling for the right of way, a vehicle
responding to an emergency is permitted to have
white light. Applying +12 Vdc activates the white
ashing LED heads.
Dimming Light Brown Applying +12 Vdc dims the light bar 50 percent.
Steady Burn Red Red One (driver side) or two red
LED heads (driver and passenger side) burn steadily
when +12 Vdc is applied to the control wire for
Steady Burn Red.
Scene Light Light Green Applying +12 Vdc turns on the scene light,
Programming White Up to six operational settings
can be selected by applying +12 Vdc to the control
wire for the setting. See “Programming the Discrete-
Wire SIFZ ILS” on page 13
Programming White Up to six operational settings can be selected
by applying +12 Vdc to the control wire for the
setting.”Programming the Discrete-Wire SIFZ ILS” on
page 13.

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Programming the Discrete-Wire SIFZ ILS
Programming the Discrete-Wire SIFZ ILS
The white programming wire enables you to program the functions of the control wires. A
description of each function is listed in Table 4. Only one control wire can be modified at a
time. If more than one control wire is active, the programming wire is disabled.
To modify the function of a control wire:
1. Connect the black wire from the light bar to ground (–GND), then apply 12 Vdc
(+BAT) to the 16 AWG red wire and the wire you want to modify.
2. Cycle through functions by tapping the white programming wire from the light bar
to 12 Vdc (+BAT).
3. To save the setting, let the function run for five seconds before removing power.
The available programming functions are listed in Table 4.
Table 4 Discrete-Wire SIFZ light bar controls
Light Bar Programming Wire Color Programming Functions
Mode 1 Flash Orange 28 ash patterns, 4 cruise patterns, Mode 2 Flash
overrides Mode 1.
Mode 2 Flash Yellow 28 ash patterns (dimming disabled)
Takedowns Black Takedown location (Inner/Outer/Double)
White Flashing
(independent)
Light Blue 17 takedown patterns (Pattern 1 adds white to any
mode-wire ash pattern.) The rest of the patterns
ash the takedown lights independently.
Dimming Light Brown N/A
Steady Burn Red Red/White Steady Burn Red location, 4 cruise patterns
Scene Light Light Green Scene light location (Inner/Outer/Full)
Programming White Hold the wire to 12 Vdc (+BAT) more than ve
seconds to reset all settings to the factory defaults
and also perform an LED scan.
Testing the Serial SIFZ ILS Controls
LIGHT HAZARD: To be an eective warning device, an emergency warning
system 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.
NOTE: After the installation, check the entire system to ensure that the lights are flashing
properly and all light systems are operating properly.
To test the light bar controls:
1. Connect the 16 AWG black lead from the light bar to the ground (–NEG) terminal of
the vehicle battery and the 16 AWG red lead to the positive terminal.
2. Connect the black and black/white wires from the Serial Interface Module to the
ground (–NEG) terminal of the vehicle battery

14 VSIFZ SpectraLux®Split Front ILS Light Bar
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Wiring the SIFZ ILS in the Vehicle
3. Apply 12 Vdc to a control wire and to the ignition wire from the Serial Interface
Module.
4. After the installation, check the entire system to make sure the lights flash
properly and all light system functions operate properly.
Wiring the SIFZ ILS in the Vehicle
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. From the light bar, route the CAT5
control cable into the vehicle cab or trunk near the planned location of a control
head that is compatible with the light bar or Serial Interface Module.
2. Connect the 16 AWG black lead to the battery ground (–NEG) terminal.
3. Connect the 16 AWG red lead through the supplied 15 A fuse at the source to the
positive (+BAT) terminal.

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Maintaining the SIFZ ILS
Maintaining the SIFZ ILS
PERIODICALLY CHECK THE GLASS: The eectiveness of the ILS light bar
depends on the clarity of the glass it is being placed behind. Dirt and defects
in the glass reduces the light output. The reliability of light for emergency
signaling purposes may be reduced if the glass is dirty, cracked, or not clear.
Be sure to periodically check the glass for cleanliness to ensure maximum
light output of the light bar.
Establishing a regular maintenance schedule for the ILS light bar extends its life and
ensures safety. Periodically check that the light bar operates properly and that all
mounting hardware is securely fastened to the vehicle. Inspect the reflectors for cracks,
crazing (hairline cracks), discoloration, and other defects.
Cleaning the Shrouds
To clean the shrouds:
1. Remove the light bar from the vehicle according to the vehicle-specific installation
instructions included with the ILS light bar.
2. Use a soft tissue to clean the shroud. If needed, you can use a solution of mild
soap and water, but take care not to get water on the PCBs.
3. When finished, make sure the light bar is completely dry before reinstalling it
according the vehicle-specific installation instructions.
Cleaning the Domes
Periodically cleaning the domes using proper procedures and compatible cleaners will
prolong their service life.
CRAZING HAZARD: Crazed, cracked, or faded domes or reectors reduce the
light output and the eectiveness of the lighting system. Tops or reectors
showing this type of aging must be replaced. Failure to follow this warning
may result in bodily injury or death to you or others.
CLEANING SOLUTION WARNING: The use of cleaning solutions, such as
strong detergents, solvents, and petroleum products, can cause crazing
(cracking) of the domes and reectors. Failure to follow this warning can
damage the domes and reectors and may result in bodily injury or death to
you or others.

16 VSIFZ SpectraLux®Split Front ILS Light Bar
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Maintaining the SIFZ ILS
To clean the domes:
1. Rinse the domes with lukewarm water to loosen dirt and debris.
2. Use a mild soap, lukewarm water, and a soft cloth to gently clean the plastic
surfaces. To avoid damaging the reflectors, do not use heavy pressure or caustic,
abrasive, or petroleum-based cleaners.
3. Rinse and dry the plastic surfaces with a soft cloth to prevent water spotting.
To remove fine scratches and haze, use a specialty plastic cleaner/polish or a non-
abrasive high quality automotive paste cleaner/wax.
Cleaning the Reectors
CRAZING HAZARD: Crazed, cracked, or faded domes or reectors reduce the
light output and the eectiveness of the lighting system. Tops or reectors
showing this type of aging must be replaced. Failure to follow this warning
may result in bodily injury or death to you or others.
CLEANING SOLUTION WARNING: The use of cleaning solutions, such as
strong detergents, solvents, and petroleum products, can cause crazing
(cracking) of the domes and reectors. Failure to follow this warning can
damage the domes and reectors and may result in bodily injury or death to
you or others.
To clean the reflectors:
1. Remove the light bar from the vehicle according to the vehicle-specific installation
instructions included with the Front ILS.
2. Use a soft tissue to clean the reflectors. If needed, you can use a solution of
mild soap and water, but take care to avoid getting the PCBs wet. Avoid heavy
pressure and the use of caustic, abrasive, or petroleum-based cleaners, which will
scratch or dull the reflectors.
3. When you are finished, make sure the light bar is completely dry before
reinstalling it according to the vehicle-specific instructions.

17
Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
Servicing the SIFZ ILS
Servicing the SIFZ ILS
This section has instructions for replacing the light bar PCBs and reflectors. For additional
service and support, call the Federal Signal Service Department at
800-433-9132, 7 a.m. to 5 p.m., Monday through Friday (Central Time). For a list of
common replacement parts, see “Ordering Replacement Parts” on page 19.
Replacing a PCB
NOTE: After replacing an LED board an LED scan may be necessary. For the serially
controlled model, see Table 1 on page 10 for the DIP switch setting. For the discrete-
wire model, see “Programming the Discrete-Wire SIFZ ILS” on page 13 for information
on cycling through the flash patterns using the white programming wire.
To replace a PCB:
1. Remove the light bar from the vehicle according to the vehicle-specific installation
instructions included with the SIFZ ILS.
2. Remove the #10 screws that hold the upper shroud. See Figure 3 on page 18.
3. Disconnect the cables. For the power/ground connector, press the tabs with a pen
or small screwdriver and remove the wires.
4. Remove the 6-32 nuts that hold down the cable clamps, reflectors, and PCB. Lift
o the parts and remove the PCB.
5. Reassemble the light bar. Twist the power and ground cables to ensure there are
no stray wires.

18 VSIFZ SpectraLux®Split Front ILS Light Bar
Federal Signal www.fedsig.com
Replacing a PCB
Figure 3 Exploded view
Plug Grommet
6-32 Nuts
Cable Clamp
Reflector
Powerground
Connector. To
Remove, Press
Tabs
Nylon Spacer
#10 Screw
Square Grommet

19
Installation, Maintenance, and Service Manual
Federal Signal www.fedsig.com
Getting Technical Support and Service
Getting Technical Support and Service
For technical support and service, please contact:
Service Department
Federal Signal Corporation
Phone: [phone]
Email: [email protected]
www.fedsig.com
Getting Repair Service
The Federal Signal factory provides technical assistance with any problems that cannot
be handled locally.
Any units returned to Federal Signal for service, inspection, or repair must be
accompanied by a Return Material Authorization (RMA). Obtain a RMA from a local
Distributor or Manufacturer’s Representative.
Provide a brief explanation of the service requested, or the nature of the malfunction.
Address all communications and shipments to the following:
Federal Signal Corporation
Service Department
2645 Federal Signal Drive
University Park, IL 60484-3167
Ordering Replacement Parts
This section contains a partial list of replacement parts. To order replacement parts, call
the Federal Signal Service Department at 1-800-433-9132 or 1-708-534-3400, 7.. to 5
.., Monday through Friday (Central Time) or contact your nearest distributor.
Table 5 Replacement parts
Description Part Number
PCB Assembly End (Congured) Contact Factory
PCB Assembly, Front (Congured) Contact Factory
PCB Assembly, Rear (Congured) Contact Factory
PCB Assembly, Controller (Congured) Contact Factory
Nut, 1/4-20, Barrel 7065071
Seal, Lip, Lens 8651116
O-Ring, Lens Nut 7067016
Gasket, Lens 8651125
Lens, Clear, 44"8651101
Lens, Clear, 51"8651103

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]