Federal Signal Corporation Reliant Manual

25500679
Rev A2 0521
© Copyright 2021 Federal Signal Corporation
Installation, Maintenance,
and Service Manual
Reliant™Light Bar

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 fitness 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.............................................................................................................................. 5
Safety Message to Installers and Service Personnel of Warning Lights...........................................5
Safety Messages to Operators of Federal Signal Sound/Light Systems ..........................................8
An Overview of the Reliant Light Bar ............................................................................................ 9
LED Lights, Colors, and Flash Patterns......................................................................................................9
Electrical System..............................................................................................................................................9
Controller Options ...........................................................................................................................................9
Product Specifications....................................................................................................................................9
Reprogramming the Light Bar...................................................................................................... 10
Reprogramming the Light Bar ....................................................................................................................10
SignalMaster®Operation: Internal (Factory Default) or External..................................................10
MODE 1, 2, 3, and INTERSECTION .....................................................................................................10
FRONT and REAR lights: CUTOFF (default) or ENABLE ................................................................. 11
Making the Electrical Connections for Reprogramming................................................................. 11
Wiring the Reliant Light Bar in the Vehicle ................................................................................ 12
Planning the Electrical Installation............................................................................................................. 12
Connecting Power to the Light Bar .......................................................................................................... 13
Low Power ................................................................................................................................................. 15
Maintaining and Servicing the Reliant......................................................................................... 16
Cleaning the Light Bar Lens........................................................................................................................ 16
Replacing a PCB............................................................................................................................................. 17
Troubleshooting the Light Bar.................................................................................................................... 19
Getting Technical Support and Service....................................................................................... 19
Getting Repair Service.................................................................................................................................. 19
Ordering Replacement Parts .....................................................................................................................20

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Figures
Figure 1 Electrical connections for reprogramming the light bar...................................................... 11
Figure 2 Cable entry location.................................................................................................................... 13
Figure 3 Relay for isolating devices with large filter capacitors....................................................... 14
Figure 4 Ground screw ............................................................................................................................... 17
Figure 5 Separated side assemblies....................................................................................................... 17
Figure 6 Locations of ROC PCBs.............................................................................................................. 18
Tables
Table 1 Dimensions........................................................................................................................................9
Table 2 Light specifications ......................................................................................................................10
Table 3 Electrical and temperature.........................................................................................................10
Table 4 SignalMaster warning patterns (internal SM control)) ....................................................... 15
Table 5 Troubleshooting tips.................................................................................................................... 19
Table 6 Replacement parts ......................................................................................................................20

Safety Messages
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Installation, Maintenance, and Service Manual
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Safety Messages
For your safety, read and understand this manual thoroughly before installing, operating,
and servicing the Reliant™light bar. The safety messages presented in this section
and throughout the manual are reminders to exercise extreme care at all times. Read
and understand the safety instructions and keep them close at hand for reference.
To download copies of this manual, go to www.fedsig.com/resource-library or call the
Federal Signal Service Department at 1-800-433-9132, 7  to 5 , Monday through
Friday (CT).
Safety Message to Installers and Service Personnel of Warning Lights
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
• 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.
• 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 maintain safe vehicle operation.
• 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 make sure 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
to the battery as possible. Ensure that all wires and fuses are rated correctly to handle
the device and system amperage requirements.

Safety Messages
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Federal Signal www.fedsig.com
• 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 and
result in flying glass. Always wear gloves and eye protection when handling these
components.
• Do not mount a radio antenna within 18 inches 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 this or any other electrical device while it is connected to its
power source. Exposure to liquid while the product is connected to the power source
may result in an electrical shock and personal injury and may short circuit and damage
the product.
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 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 cause 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.
• 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.

Safety Messages
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Installation, Maintenance, and Service Manual
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• 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.
• To avoid denting the roof of the vehicle, place the light bar mounting feet as close
to outer edge of the roof as possible.
• Roof damage can occur if the hook adjustment bolts are over-tightened. Torque
the adjustment bolts to 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.
• If a seat is temporarily removed, verify with the vehicle manufacturer if the seat
needs to be recalibrated for proper airbag deployment.
• 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.
• Do not use a pressure washer to clean the light bar. Failure to heed this notice will
damage the light bar.
• 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.

Safety Messages
8Reliant™Light Bar
Federal Signal www.fedsig.com
Safety Messages to Operators of Federal Signal Sound/Light Systems
People’s lives depend on your safe operation of Federal Signal products. It is important
to read and follow all instructions shipped with the products. Listed below are some other
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.
• 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.
• 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.
• 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 the light/sound system in accordance with 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 is securely attached and operating properly.
Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death.

An Overview of the Reliant Light Bar
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An Overview of the Reliant Light Bar
The Reliant™light bar is a single-level LED light bar with ROC (Reliable On-Board
Circuitry™) and Solaris®LED technologies. ROC eliminates approximately 85 percent of
potential failure points by incorporating a printed circuit board (PCB) in one assembly
to substantially reduce the number of electrical connections. Solaris S2 LED modules
use oset, complex reflector surfaces for accurate beam-shaping and the highest
optical eciency. The reflectors’ overlapping, 360-degree lighting eliminates weak
spots and provides o-axis warning around the light bar.
LED Lights, Colors, and Flash Patterns
The microprocessor inside the light bar supplies three priority operational modes and a
library of flash patterns. To increase the safety of ocers, pedestrians, and motorists, the
light bar has standard front and rear cuto, dimming, and intersection warning.
Multi-color heads are available with up to two dierent colored LEDs, eliminating the loss
of primary warning colors in takedown, alley, and directional warning positions. Individual
Reliant light heads can flash between red, blue, amber, or white.
Electrical System
The Reliant light bar is protected against reversed polarity damage. The Reliant Light
Bar can be installed in any vehicle with a 12-volt negative-ground electrical system.
Controller Options
Flash patterns are controlled through the light bar CAT5 communication cable. The
cable connects to Federal Signal Convergence network controllers or the Serial
Interface Module (Part Number 858303641).
With the Serial Interface Module, the Reliant Light Bar can be activated by Federal
Signal light bar controllers or by individual low-current switch boxes.
Other advanced features of the Reliant light bar include:
• A high degree of reliability through the use of advanced microprocessors and other
integrated circuits.
• High output, long-life LEDs with no bulbs to change.
Product Specications
Operating and technical specifications for the Reliant™light bar are listed in this section by
model.
Table 1 Dimensions
Size (L x W x H) 47.6 x 11.6 x 1.3 inches (120.9cm x 29.5cm x 3.3cm)
Weight* 20.5 lb (9.3 kg)
*with standard mounting feet

Reprogramming the Light Bar
10 Reliant™Light Bar
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Table 2 Light specications
Lighting Option Current Draw Lamp Technology Reector Style
LED (all heads) 1.0 A in Steady-Burn Mode High-brightness LED O󰀨set, compound curve,
polished reector
Table 3 Electrical and temperature
Electrical
Potential
Current Draw
(50 % Flash Rate)
Operating Temp.
12.8 Vdc 13.0 A -40°F to 149°F (-40°C 50 to 65°C)
Reprogramming the Light Bar
HEAVY OBJECT: Use lifting aids and proper lifting techniques when removing or
replacing this product. Failure to heed this warning may cause personal injury.
Carefully unpack the light bar assembly and any other products included in the shipment.
Inspect them for damage that may have occurred during shipping. If a product has been
damaged, do not install or operate it. Immediately file a claim with the carrier describing
the damage.
Carefully check all envelopes, shipping labels, and tags before removing or destroying
them. If you are missing any parts, contact Customer Support at 1-800-264-3578, 7 to
5 , Monday through Friday (CT).
Reprogramming the Light Bar
Although the Reliant™light bar is configured and programmed at the factory, you may
want to change the default settings and flash patterns before installation. Before you
begin, decide if you want to change these default settings.
SignalMaster®Operation: Internal (Factory Default) or External
The internal operation uses the onboard SignalMaster controller in the light bar to
generate directional warning patterns. With Internal operation, an external SignalMaster
controller is not needed. A standard low current switch box can activate the internal
SignalMaster controller.
MODE 1, 2, 3, and INTERSECTION
• MODES 1 through 3 are most often selected by a progressive slide switch, which
enables the driver to turn on the light bar without looking down. You can select a
pattern for each mode from the light bar’s library of 26 patterns.
• The INTERSECTION flash pattern is typically a high activity pattern that attracts attention
to the vehicle as it approaches an intersection. You can select a pattern from the library
and choose one of three ways to turn on and o the pattern. The INTERSECTION flash
pattern overrides the three priority modes.
NOTE: If the SignalMaster flash pattern is turned on, it overrides the current flash pattern.