Federal Signal Corporation MicroPulse SignalMaster User manual

Instructions for Installing the MicroPulse®
SignalMaster™with or Without Brake Module
25500452 Rev A2 0821
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 and the original product. Listed below are
some other important safety instructions and precautions you should follow:
• To properly install this light, you must have a good understanding of automotive electrical procedures
and systems, along with proficiency in the installation and use of safety warning equipment.
• Always refer to the vehicle’s service manuals when performing equipment installations on a vehicle.
• 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.
• When drilling into a vehicle structure, ensure that both sides of the surface are clear of anything that
could be damaged.
• In order for the light to function properly, a separate ground connection must be made. If practical, it
should be connected to the fusible link at the front fender between the negative (–) battery terminal
and chassis ground. At a minimum, it may be attached to a solid metal body or chassis part that will
provide an eective ground path as long as the light system is to be used.
• Locate the light control so the VEHICLE and CONTROL can be operated safely under all driving
conditions.
• If a seat is temporarily removed, verify with the vehicle manufacturer if the seat needs to be
recalibrated for proper airbag deployment.
• Do not attempt to activate or deactivate the light control while driving in a hazardous situation.
• This product contains high-intensity LED devices. To prevent permanent eye damage, DO NOT stare
into the light beam at close range.
• Frequently inspect the light system to ensure that it is operating properly and that it is securely
attached to the vehicle.
• Do not install equipment or route wiring in the deployment path of an airbag. Failure to observe this
warning will reduce the eectiveness of the airbag or potentially dislodge the equipment, causing
serious injury to you or others.
• 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 to you or others.

Installing the MicroPulse®SignalMaster™with or Without Brake Module
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Overview
The Federal Signal MicroPulse SignalMaster is a directional light assembly for use in a flashing mode.
The only lens is clear with red or amber LEDs.
The MicroPulse SignalMaster provides these distinctive directional signals: left arrow, right arrow, and
center out. In addition, an alternating flash pattern produces a warning signal for use when a directional
signal may not be appropriate.
When a directional signal is selected, the lamps illuminate individually in a sequential sweeping motion
until all lamps are illuminated. The brake module, which operates independently from the control module,
is located at the center of the light bar.
These lights are for secondary warning only. They are not for use as a primary warning system.
Failure to use these lights as intended may cause property damage, personal injury, or death.
Table 1 Specications
Input Voltage 11 Vdc to 13.6 Vdc (12 V models)
Polarity Negative ground only
Height 2.6 inches (6.6 cm)
Length 65.2 inches (165.6 cm), 50.6 inches (128.5 cm), 44.2 inches (112.3 cm), 41.8 inches (106.2 cm),
36.9 inches (93.7 cm), 31.7 inches (80.5 cm), and 23.1 inches (58.7 cm)
Depth 3.4 inches (8.6 cm)
Cable Length 15 x 30 x 60 feet (457.2 x 914.4 x 1828.8 cm)
Installing the MicroPulse SignalMaster Light Assembly
STATIC SENSITIVE DEVICE: The circuitry can be damaged or destroyed by electrostatic
discharge (ESD). To prevent ESD, observe anti-static procedures during installation.
Install the light assembly as described in the instructions included with the mounting kit. Route the cables
to the planned location of the control unit.
Installing the Control Unit and Completing the Wiring
To install the unit:
UNIT REQUIRES VENTILATION: The control unit needs to radiate heat. Do not install it in an
area where it cannot dissipate heat into the air. Do not mount the unit near a heater duct or
under the hood.
NOTE: Plan all wiring and cable routing before selecting a mounting location for the control unit.
1. Install the control unit and complete the wiring as described in the instructions included with the
control unit.
REVERSE POLARITY/MISWIRNG: 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

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the light and that the correct polarity is observed.
2. Using 18 AWG (minimum) wire, connect the red (+) lead to the positive power source terminal for the
brake module.
3. Using 18 AWG (minimum) wire, connect the black (–) lead to the negative power source terminal for
the brake module.
Removing a Light Head
To remove the light head:
1. Remove and retain the two screws that secure the light to the mounting plate (Figure 1).
2. Disconnect the wire harness connector from the cable assembly.
Figure 1 MicroPulse SignalMaster light head removal
Screws (2) for Securing Each
Light Head to Faceplate
MicroPulse
Light Head
Faceplate
Reinstalling a Light Head
To reinstall the light head:
1. Reconnect the wire harness to the cable assembly.
2. Install the replacement light head by securing it with two removed screws. Tighten the screws so that
there is no movement in that light head. Ensure that the LED is facing the upright position.
Testing the System
LIGHT HAZARD: 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.
SOUND HAZARD: All eective sirens and horns produce loud sounds (120 dB) that may cause
permanent hearing loss. Always minimize your exposure to siren sound and wear hearing
protection. Do not sound the siren indoors or in enclosed areas where you and others will be
exposed to the sound.
After the installation, test the emergency warning system to ensure that it is operating properly. Also test
all vehicle functions, including horn operation, vehicle safety functions, and vehicle lighting systems to
ensure proper operation. Ensure that the installation has not aected the vehicle operation or changed

Installing the MicroPulse®SignalMaster™with or Without Brake Module
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any vehicle safety functions or circuits. After testing is complete, provide a copy of these instructions to
the instructional sta and all operating personnel.
Cleaning the Plastic Lenses
CRAZING/CLEANING SOLUTIONS: The use of cleaning solutions, such as strong detergents,
solvents, and petroleum products, can cause crazing (cracking) of the light bar lens and
reectors. To clean the reectors, use a soft, damp cloth. To clean the lens, use a soft cloth and
a solution of water and a mild detergent.
CRAZING/CHEMICALS: Crazed, cracked or faded lenses or reectors reduce the light output
and the eectiveness of the lighting system. A lens or reectors showing this type of aging
must be replaced. Failure to follow this warning may result in bodily injury or death.
Failure to follow this warning can damage the lenses and reflectors, reducing their eectiveness, and
may result in bodily injury or death to you or others.
1. Rinse the lenses with lukewarm water to loosen dirt and debris.
2. Use a mild soap, lukewarm water, and a soft cloth to gently clean the lenses. To avoid damaging the
lens, do not use heavy pressure or caustic, abrasive, or petroleum-based cleaners.
3. Rinse and dry the lenses with a soft cloth to prevent water spots.

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4. To remove fine scratches and haze, use a specialty plastic cleaner/polish and a soft cloth. You can
also use a high-quality automotive paste cleaner/wax that is non-abrasive.
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 an 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

Installing the MicroPulse®SignalMaster™with or Without Brake Module
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Service Department
2645 Federal Signal Drive
University Park, IL 60484-3167
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].

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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.
Ordering Replacement Parts
To order replacement parts, call Customer Support at 1-800-264-3578, 7 a.m. to 5 p.m., Monday through
Friday (CT) or contact your nearest distributor.
Table 2 Replacement Parts
Description Part Number
Red, Surface Mount, Brake,12-LED MPS121UD-BRAKE
Amber, Surface Mount, 12-LED MPS121UD-A

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]
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