Federal Signal Corporation Legend LGD Setup guide

2562365
Rev. M1 0820
Printed in U.S.A.
© Copyright 2014-2020 Federal Signal Corporation
Installation, Operation, and Service Manual
Para descargar el manual en español,
visite www.fedsig.com
Legend®LGD and LPX Light Bars

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, in-
cluding, 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
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 trademarks are property of their respective owners.

3
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Contents
Safety Messages..........................................................................................................................6
Safety Message to Installers and Service Personnel of Warning Light Equipment ......................... 6
Safety Message to Operators of Warning Light Equipment................................................................... 9
Overview of the Legend Light Bar ...........................................................................................10
Product Features ..............................................................................................................................................10
Applications ........................................................................................................................................................11
Product Specifications......................................................................................................................................11
Approvals............................................................................................................................................................13
Model LGD and LPX Flash Pattern Compliances.....................................................................................13
Model LPXD Light Activation.........................................................................................................................15
Model LPXD Flash Pattern Compliances....................................................................................................16
Changing the Default MODE 1 Flash Pattern ............................................................................................16
Changing the Default MODE 2 Flash Pattern ...........................................................................................17
Preparing the Legend for Installation......................................................................................18
Unpacking the Light Bar .................................................................................................................................18
Changing the Default Settings......................................................................................................................18
Wiring the Legend in the Vehicle .............................................................................................26
Wiring the Light Bar in the Vehicle..............................................................................................................26
Mounting the Serial Interface Module........................................................................................................27
Wiring the Serial Interface Module .............................................................................................................29
Wiring the Stop/Turn/Tail Lights...................................................................................................................36
Wiring the Takedown or Worklights (LGD24 or LGD32 Models Only)...............................................37
Wiring for 12-inch Legend..............................................................................................................................37
Maintaining and Servicing the Legend....................................................................................38
Servicing the Light Bar Domes ....................................................................................................................38
Replacing a Light Bar Base ...........................................................................................................................40
Replacing an End Gasket ..............................................................................................................................42
Replacing a Lip Seal........................................................................................................................................42
Adjusting the Aim of the HotFoot LED Assemblies ...............................................................................43
Replacing the ROC Panel Assemblies .......................................................................................................44
Servicing the Light Bar Controller...............................................................................................................44
Cleaning the Domes .......................................................................................................................................47
Cleaning the Reflectors..................................................................................................................................47
Troubleshooting the Light Bar......................................................................................................................48
Getting Technical Support and Service...................................................................................50
Getting Repair Service .................................................................................................................................. 50
Ordering Replacement Parts .........................................................................................................................51
Appendix A: Wiring Schematics ..............................................................................................52
An Overview of the Discrete-Wired 24-inch Legend Light Bar ...........................................................52

4Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
Figures
Figure 1 Electrical connections for testing and reprogramming............................................................... 19
Figure 2 Serial Interface Module....................................................................................................................... 21
Figure 3 Light options for Legend light bars................................................................................................. 25
Figure 4 Relay-isolating devices with large filter capacitors .................................................................... 28
Figure 5 Wiring block diagram ......................................................................................................................... 29
Figure 6 SignalMaster 331105 controller (External) .................................................................................... 32
Figure 7 SmartSiren SS2000SM Series controller (External) ................................................................... 33
Figure 8 SignalMaster control functions wired to 12 Vdc for Internal control (factory default) ............
34
Figure 9 SignalMaster control functions wired to ground for External control .................................. 35
Figure 10 Stop/turn/tail wiring between light bar and vehicle harness ................................................. 36
Figure 11 Worklight wiring between light bar and switched +12 Vdc.......................................................37
Figure 12 Internal/External flasher wiring for 12-inch Legends .................................................................37
Figure 13 Four barrel nuts in passenger-side end dome........................................................................... 39
Figure 14 Base removed from aluminum extrusion...................................................................................... 41
Figure 15 End gasket in the end base cavity ................................................................................................ 42
Figure 16 Lip seal on edge of plastic dome .................................................................................................. 43
Figure 17 Adjusting the aim of the LED assembly ....................................................................................... 43
Figure 18 Controller and standos removed from ROC panel................................................................. 45
Figure 19 Fuses on light bar controller PCB ................................................................................................ 46
Tables
Table 1 LED Lights ..................................................................................................................................................11
Table 2 Light Bar Dimensions............................................................................................................................12
Table 3 Technical Specifications .......................................................................................................................12
Table 4 Model 8583446 SP................................................................................................................................13
Table 5 Flash pattern compliances to SAE J845 and CCR Title 13..........................................................14
Table 6 Flash pattern compliances to NFPA..................................................................................................15
Table 7 Model LPXD control wires for light activation.................................................................................16
Table 8 Model LPXD available flash patterns................................................................................................16
Table 9 Control wires from the Serial Interface Module........................................................................... 20
Table 10 SW-2 DIP Switch Settings...................................................................................................................21
Table 11 Switch settings for INTERSECTION operation..............................................................................24

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Schematics
Schematic A 1 Discrete-wired 24-inch Legend light bar............................................................................52
Schematic A 2 Typical connections with a SignalMaster controller (External) ....................................53
Schematic A 3 Typical connections with a SW400SS Switch Module (Internal) .................................54
Schematic A 4 Typical connections with a SmartSiren controller...........................................................55
Schematic A 5 Typical connections with a non-SignalMaster controller ..............................................56
Schematic A 6 Typical connections with a PA640 controller...................................................................57
Schematic A 7 Typical connections for LPXD Discrete Legend and LPX Legend..............................58
Schematic A 8 Typical connections for LPXD Discrete Legend and LPX Legend with Preterminated
Weather tight Connectors...................................................................................................................................59
Table 12 Cross reference for controller leads...............................................................................................32
Table 13 Domes and ROC panel assemblies for LGD/LPX models.........................................................39
Table 14 Troubleshooting tips ...........................................................................................................................48
Table 15 Legend replacement parts.................................................................................................................51

Safety Messages
6Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
Safety Messages
For your safety, read this manual thoroughly before installing, operating, and
servicing the Legend®light bar. The safety messages presented in this section
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  to 5 , Monday through Friday (CT).
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 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
• 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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• 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. Be sure to disconnect power to the
system and allow the system to cool down before handling any components of
the system.
• 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 be sure
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.
• 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.
• 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.

Safety Messages
8Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
• 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 overtightened. Torque
each hook adjustment bolt 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.
• 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 the 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 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.
• 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:
• Mounting surface and magnets must be kept clean, dry, and free of foreign
particles that prevent good surface contact.
• Ensure that mounting surface is flat.
• A magnet mounting system should not be used on vehicles with vinyl tops.
• Avoid quick acceleration and hard stops to prevent sliding of light assembly
on mounting surface.
Failure to follow all safety precautions and instructions may result in property
damage, serious injury, or death.
RETAIN AND REFER TO THIS MESSAGE

Safety Messages
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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.
• 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.
• 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.
• 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.
• 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.
Failure to follow these precautions may result in property damage, serious
injury, or death.
RETAIN AND REFER TO THIS MESSAGE

Overview of the Legend Light Bar
10 Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
Overview of the Legend Light Bar
The Legend and Legend LPX light bars are single-level LED light bars 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.
The light bar's internal microprocessor supplies three priority operational modes
and a library of 26 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. Bright white LED takedown lights, LED alley lights, and LED
worklights are available in the light bar.
Flash patterns are controlled through the light bar’s CAT5 serial communication
cable. The cable connects to the Federal Signal Serial Interface Module (Model
Number 8583446), the Federal Signal Six-Button Serial Controller (Model Number
8623133), the Federal Signal Three-Button Serial Controller (Model Number
8623141), or the Six-Button Wireless Controller (8623137). With the Serial Interface
Module, the Legend can be activated by Federal Signal light bar controllers,
SignalMaster directional light controllers, or by individual low-current switch boxes.
(SignalMaster directional warning lights are not available with the Model LGD12,
LGD24, LGD32, LPX24. LPX32, or any of LPXD models.) The programmable Six-
Button Serial Controller and the Six-Button Wireless Controller have six illuminated
buttons and a three-position slide switch with LED indicators for operating the light
bar. The programmable Three-Button Serial Controller has three illuminated buttons
and LED indicators for operating the light bar.
The Legend is available in seven lengths: 12 inches (Model LGD12) (sold as a set),
24 inches (Model LGD24) 32inches (Model LGD32), 45 inches (Model LGD45),
53inches (Model LGD53), 61 inches (Model LGD61), and 70 inches (Model LGD70).
Also available is the Discrete-Wired 24-inch Model Legend, which has one flash
pattern and does not connect to the Serial Interface Module. The Legend LPX is
available in six lengths: 24 inches (Model LPX24), 32 inches (LPX32), 45 inches
(Model LPX45), 53 inches (Model LPX53), 61 inches (Model LPX61), and 70 inches
(Model LPX70).
Product Features
Additional features include:
• Design provides superior 360-degree intersection warning.
• Bright white LED takedowns are long life and significantly reduce power
consumption.
• Light bar housing is wind tunnel tested to ensure durability at high speeds and
maximum fuel eciency.

Overview of the Legend Light Bar
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• Available LED colors include amber, blue, red, green, and white.
• Built-in SignalMaster directional warning capability is standard on all Legend
45-inch, 53-inch, 61-inch, and 70-inch, and Legend LPX serially controlled
models of the same lengths. SignalMaster flash patterns can be activated with
switched 12 Vdc, a SignalMaster controller, or six-button controller.
• The SignalMaster option is not available in any LPXD model.
• Five-year warranty on LEDs.
• Easily repaired and reconfigured without taking the light bar o the vehicle.
Applications
• Police, Fire, and EMS Vehicles
• Heavy-Duty Towing and Recovery Vehicles
• Parking enforcement and community service vehicles
• Private security vehicles
Product Specications
Operating and technical specifications for the Legend Model LGD and Legend
Model LPX are listed in this section by lighting option and model.
Table 1 LED Lights
Lighting Option Current
Draw
Lamp
Technology Reector Style
LED takedown lights/worklights
(Legend LGD) 1.0 A** Six bright white LEDs
O󰀨set, compound-curve,
polished spot beam
reector
LED takedown lights/worklights
(Legend LPX) 1.0 A** Four bright white LEDs
O󰀨set, compound-curve,
polished spot beam
reector
LED alley light 0.5 A* Three bright white lights O󰀨set, compound-curve,
polished reector
Solaris LED, Mainbar
(Legend LGD) 1.0 A** Six high-brightness LEDs O󰀨set, compound-curve, polished reector
Solaris LED, Mainbar
(Legend LPX) 1.0 A** Four high-brightness LEDs O󰀨set, compound-curve, polished reector
*Amperage per pair with flashing takedown and alley lights
**Amperage in STEADY BURN mode

Overview of the Legend Light Bar
12 Legend LGD and Legend LPX Light Bars
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Table 2 Light Bar Dimensions
Model Length Height Width Weight*
LGD24/
LPX24
24.25 in
(61.6 cm)
2.5 in
(6.4 cm)
11.2 in
(28.4 cm)
16.6 lb
(7.5 kg)
LGD32/
LPX32
32.5 in
(82.6 cm)
2.5 in
6.4 cm)
11.2 in
(28.4 cm)
18.5 lb
(8.4 kg)
LGD45/
LPX45
44.5 in
(133.0 cm)
2.5 in
(6.4 cm)
11.2 in
(28.4 cm)
20.4 lb
(9.3 kg)
LGD53/
LPX53
52.7 in
(133.9 cm)
2.5 in
(6.4 cm)
11.2 in
(28.4 cm)
24.2 lb
(11.0 kg)
LGD61/
LPX61
60.9
(154.7 cm)
2.5 in
(6.4 cm)
11.2 in
(28.4 cm)
28.0 lb
(12.7 kg)
LGD70/
LPX70
69.1
(175.5 cm)
2.5 in
(6.4 cm)
11.2 in
(28.4 cm)
31.81 lb
(14.4 kg)
*With standard mounting feet
Table 3 Technical Specications
Model Electrical
Potential
Current Draw
with LED
Takedowns*
Operating
Temperature
LGD24 12.8 Vdc 11.0 A –22ºF to +149ºF
(–30ºC to +65ºC)
LPX24 9.0
LGD32 12.8 Vdc 15.0 A –22ºF to +149ºF
(–30ºC to +65ºC)
LPX32 13.0 A
LGD45
12.8 Vdc
19.0 A –22ºF to +149ºF
(–30ºC to +65ºC)
LPX45 17.0 A
LGD53
12.8 Vdc
23.0 A –22ºF to +149ºF
(–30ºC to +65ºC)
LPX53 21.0 A
LGD61 12.8 Vdc 27.0 A –22ºF to +149ºF
(–30ºC to +65ºC)
LPX61 25.0 A
LGD70
12.8 Vdc
31.0 A
–22ºF to +149ºF
(–30ºC to +65ºC)
29.0 A
LPX70Z
27.0 A
LPX70D
*Max. amperage for a typically loaded light bar with all lights flashing

Overview of the Legend Light Bar
13
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Serial Interface Module
Table 4 Model 8583446 SP
Length Height Width Shipped with a 24-pin cable harness
(1751364) that is 3 feet long. The
harness connects to the module's J1
outlet.
6.25 in
(15.9 cm)
3.16 in
(8.0 cm)
1.06 in
(2.7 cm)
Approvals
• SAE J845 Light Output (select flash patterns, Table 5 on page 14)
• CCR Title 13 (select flash patterns and LGD models, Table 5 on page 14)
• SAE 1113/41 RFI
• FCC Part 15
• NFPA (Table 6 on page 15)
Model LGD and LPX Flash Pattern Compliances
The patterns listed as “Yes” (Y) in Tables 5 and 6 comply with the flash
requirements and light output requirements of the lighting standard in the table
header. Patterns listed as “No” (N) do not comply with either the flash requirements
or the light output of the standard. You should use a non-compliant pattern only
after the people you are trying to warn have been trained to recognize the pattern
as a warning signal. End users are responsible for choosing the light patterns that
meet their jurisdiction’s requirements.

Overview of the Legend Light Bar
14 Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
Table 5 Flash pattern compliances to SAE J845 and CCR Title 13
Pattern
SAE J845 CCR Title 13 CCR Title 13 (Amber) ****
LGD24/*
LPX24
LGD45/
LPX45
LGD53/
LPX53 LGD24@ LGD45@ LGD53@ LGD24S LGD45S LGD53S
P1 Y Y Y Y Y Y Y Y Y
P2 Y Y Y Y Y Y Y Y Y
P3 Y Y Y Y Y Y Y Y Y
P4 Y Y Y N Y Y Y Y Y
P5 Y Y Y Y Y Y Y Y Y
P6 Y Y Y N Y N Y Y Y
P7 Y Y N Y N N Y Y Y
P8 N N N N N N Y Y Y
P9 Y Y Y Y Y Y Y Y Y
P10 Y Y Y Y Y Y Y Y Y
P11 Y N Y N N N Y Y Y
P12 Y N N N N N Y Y Y
P13 N Y Y N N N Y Y Y
P14 N Y Y N N N Y Y Y
P15 Y Y Y N N N Y Y Y
P16 Y N N N N N Y Y Y
P17 Y Y Y N N N Y Y Y
P18 Y Y Y N N N Y Y Y
P19 Y Y Y N N N Y Y Y
P20 Y Y Y Y N N Y Y Y
P21 N N N N N N Y Y Y
P22 Y N N Y N N Y Y Y
P23 Y Y N N N N Y Y Y
P24 Y N N N N N Y Y Y
P25 Y N N N N N Y Y Y
P26 Y Y Y N N N Y Y Y
P27 TEST
ONLY **
N N N N N N N N N
P28 TEST
ONLY ***
N N N N N N N N N
* Serially-controlled 24-inch Legend LGD and Legend LPX @Title 13 LPX is complaint in red
only.
** Pattern 27: All LEDs light head turns on.
*** Pattern 28: Each LED light head sequentially turns on for 1 second.
**** For amber Title 13 compliant models: Selecting the Low Power option makes the flash patterns non-compliant.

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It is the user's responsibility to verify the acceptability of Low Power in his or her jurisdiction before using this option.
Table 6 Flash pattern compliances to NFPA
Pattern NFPA
LGD-NFPA*** LPX-NFPA***
P1 N N
P2 N N
P3 N N
P4 N N
P5 Y N
P6 Y N
P7 Y N
P8 Y Y
P9 Y Y
P10 Y Y
P11 Y N
P12 Y N
P13 Y Y
P14 Y N
P15 Y N
P16 Y N
P17 Y Y
P18 Y Y
P19 Y Y
P20 Y Y
P21 Y N
P22 Y N
P23 Y Y
P24 Y Y
P25 Y Y
P26 Y N
P27 TEST
ONLY **
N N
P28 TEST
ONLY ***
N N
*Pattern 27: All LEDs light head turns on.
** Pattern 28: Each LED light head sequentially turns on for 1 second.
*** The light bar layout must also meet NFPA compliance. Contact Customer Support for verification at
1-800-682-8022.
Model LPXD Light Activation
The operational mode of the Model LPXD Discrete-Wire Legend is dependent
upon the variation of options incorporated into the final model. Installation, wiring,
and operation instructions are in the instructions supplies with the Model LPXD.
The functions defined in Table 7 are activated via +12 Vdc applied to any of the
wires shown in Table 7 except for the green pattern-selection wire, which is ground
activated. There are eight flashing patterns available, which are described in
Table8.

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16 Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
Follow the standard installation from the Legend (LGD) instructions. Federal Signal
recommends fusing each wired connection in Table 7 with the fuse shown in the
table. See Schematic A 7 on page 58.
Table 7 Model LPXD control wires for light activation
Wire Color Fuse Light Activation
Red 20 A Front of light bar, Mode 1 (for rear cuto󰀨, activate only the red wire)
Yellow 20 A Rear of light bar, Mode 1 (for front cuto󰀨, activate only the yellow wire)
Blue 5 A Mode 2: Overrides Mode 1
Gray 5 A Flash takedown/alley
Brown 5 A Left alley
Brown/White 5 A Right alley
Orange 5 A Worklight/takedown (If both options are installed, they work together.)
Green NA Pattern change ***THIS FUNCTION IS GROUND ACTIVATED***
Model LPXD Flash Pattern Compliances
The flash patterns listed as “Yes” (Y) in Table 7 comply with the SAE J845 flash
requirements and light output requirements. Patterns listed as “No” (N) do not
comply with these requirements. A non-compliant pattern should be used only
after the people you are trying to warn have been trained to recognize the pattern
as a warning signal. End users are responsible for choosing the flash patterns that
meet their jurisdiction’s requirements.
Table 8 Model LPXD available ash patterns
Pattern
Number Description SAE J845 Compliant
P1 2 at 60 FPM QUAD FLASH Alternating, then
2 at 60 FPM DOUBLE FLASH Simultaneous N
P2 60 FPM 5-FLASH Alternating Y
P3 60 FPM QUAD FLASH Alternating Y
P4 75 FPM TRIPLE FLASH Alternating Y
P5 85 FPM DOUBLE FLASH Alternating Y
P6 115 FPM Alternating Y
P7 152 FPM Alternating Y
P8 1 at 60 FPM TRIPLE FLASH Alternating
2 at 60 FPM TRIPLE PULSE Simultaneous N

Overview of the Legend Light Bar
17
Installation, Operation, and Service Manual
Federal Signal www.fedsig.com
Changing the Default MODE 1 Flash Pattern
To change the Mode 1 flash pattern to one of the patterns shown in Table 8:
1. Apply +12 Vdc power to the red and/or yellow MODE 1 wire(s).
2. Temporarily ground the green wire to advance to the next pattern. Repeat this
step until the pattern you want displays.
3. Remove power from the light bar. The pattern is retained as the MODE 1 default.
Changing the Default MODE 2 Flash Pattern
To change the Mode 2 flash pattern to one of the patterns shown in Table 8:
1. Apply +12 Vdc power to the red and/or yellow MODE 1 wire(s).
2. Apply +12 Vdc power to the blue MODE 2 wire.
3. Temporarily ground the green wire to advance to the next pattern. Repeat this
step until the pattern you want displays.
4. Remove power from the light bar. The pattern is retained as the MODE 2
default.

Preparing the Legend for Installation
18 Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
Preparing the Legend for Installation
Taking the preparatory steps in this section before mounting and wiring the light
bar to a vehicle will help to ensure that your installation is fast, easy, and error
free. In addition to bench testing, this section has instructions for changing default
settings and flash patterns.
Unpacking the Light Bar
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).
Changing the Default Settings
Although the light bar is configured and programmed at the factory, you may want
to change 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
You can change the setting from Internal to External. INTERNAL operation uses
the light bar’s on-board SignalMaster controller 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.
EXTERNAL operation uses the Serial Interface Module to drive each SignalMaster
directional warning head independently through an external Federal Signal
SignalMaster controller or SS2000SM series siren
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.
FRONT and REAR lights: CUTOFF (default) or ENABLE
Set these options after you change the default settings for MODE and
INTERSECTION flash patterns. CUTOFF turns OFF the front or rear LEDs when
12Vdc is applied to the FRONT or REAR light control wire. ENABLE turns ON the
front or rear LEDs when 12 Vdc is applied.

Preparing the Legend for Installation
19
Installation, Operation, and Service Manual
Federal Signal www.fedsig.com
Making the Initial Electrical Connections
REVERSE POLARITY / MISWIRING: Reverse polarity or incorrect voltage
may damage the light. To avoid damage to the light, ensure that the battery
voltage is the same as the voltage rating of the light and that the correct
polarity is observed. If you are connecting to a cigarette lighter plug or 12 V
outlet, connect the positive wire to the center terminal and connect the
negative wire to the outer terminal.
The Legend does not require any internal wiring. Two 10 AWG power conductors
(red and black) and a CAT5 cable exit the light bar. The light bar's basic light
functions are communicated through the CAT5 cable, which connects to the Serial
Interface Module. (The Discrete-Wired 24-inch Legend does not connect to the
Serial Interface Module and has no CAT5 cable.) For wiring schematics, see the
Appendix starting on page 52.
To make the electrical connections for reprogramming the light bar:
1. To supply power to the light bar, use a fully-charged 12-volt automotive battery
with terminal lugs.
2. Place the light bar on a sturdy, flat surface.
3. Plug the CAT5 communication cable (1) from the light bar into the Serial Interface
Module (J1). See Figure 1.
Figure 1 Electrical connections for testing and reprogramming
45-inch Legend (LGD45)
Passenger
Side
Driver
Side
Serial
Interface
Module
Power Line (Red)
Ground Power Line (Black)
Black Wire
Black / White Wire
CAT5
Com.
Cable
(Gray)
White Wire 24-Pin Harness
5
290A5957B
+ –
12 Vdc
Vehicle
Battery
4
3
1
2
6
Fuse
1 A
Fuse
40 A Maxi

Preparing the Legend for Installation
20 Legend LGD and Legend LPX Light Bars
Federal Signal www.fedsig.com
4. Plug the 24-pin harness (2) into the Serial Interface Module.
5. Attach the light bar’s black ground power line (3) to the negative battery (–GND)
lug.
6. Attach the light bar’s red power line (4) through a 40 A MAXI®fuse to the
positive battery (+BAT) lug.
7. Attach the white wire (5) from the 24-pin harness through a 1 A fuse to the
positive battery (+BAT) lug.
8. Attach the black wire and the black/white wire (6) from the 24-pin harness to the
negative battery (–GND) lug.
Control Wires for Flash Patterns
This section describes how to program flash patterns during bench testing and
programming by applying 12 Vdc to the control wires in the Serial Interface
Module's 24-pin harness. Table 9 shows the control wires and their colors. The
wire's first color is the predominant color; additional colors are stripes.
Table 9 Control wires from the Serial Interface Module
Light Bar Controls Wire Color Description
MODE 1 Blue Lowest priority
MODE 2 Blue/White Overrides MODE 1
MODE 3 Black/Red Overrides MODES 1 and 2
STEADY BURN
(Legend light bar
models only)
Red/White One or more LEDs steadily burn when 12 Vdc is
applied to the control wire for a MODE and the
control wire for STEADY BURN
FRONT CUTOFF Green/White Turns OFF the FRONT of the light bar
FRONT ENABLE Turns ON the FRONT of the light bar
REAR CUTOFF Orange/Black Turns OFF the REAR of the light bar
REAR ENABLE Turns ON the REAR of the light bar
INTERSECTION Blue/Black Typically a high activity pattern. Overrides all three
priority modes.
FLASH TAKEDOWN/
ALLEY
Red/Black Flashes the ALLEY and TAKEDOWN lights in
MODES 1, 2, or 3
LEFT ALLEY Green/Black Turns on LEFT ALLEY lights. Overrides the FLASH
TAKEDOWN/ALLEY lights
RIGHT ALLEY Orange/Red Turns on RIGHT ALLEY lights. Overrides the FLASH
TAKEDOWN/ALLEY lights.
TAKEDOWN White/Black Provides white light to the front. Overrides FLASH
TAKEDOWN/ALLEY lights and FRONT CUTOFF.
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.
LIGHT BAR TEST
PATTERN
Black/White/Red Flashes the LEDs sequentially and then ashes the
TAKEDOWN and ALLEY lights. Does not test the
Steady Burn LEDs.