Federal Signal Corporation GH1 User manual

2561080C
REV. C 901
Printed in U.S.A.
INSTRUCTION SHEET
FOR
GRILLE LIGHT MODELS GH1 AND GS1
SAFETY MESSAGE TO INSTALLERS AND USERS
People’s lives depend on your safe installation of
our products. It is important to read, understand and
follow all instructions shipped with the products. In
addition, 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.
• O NOT install equipment or route wiring
in the deployment path of an air bag.
• When drilling into a vehicle structure, be
sure 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
negative battery terminal. At a minimum,
it may be attached to a solid metal body or
chassis part that will provide an effective
ground path as long as the light system is
to be used.
• Locate light control so the VEHICLE and
CONTROL can be operated safely under all
driving conditions.
• o not attempt to activate or deactivate
light control while driving in a hazardous
situation.
• You should frequently inspect the light to
ensure that it is operating properly and that
it is securely attached to the vehicle.
• 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.
A. GENERAL.
The Model GH1 is an economical, low wattage,
halogen light designed to be used in a flashing mode.
It is designed for use on a vehicle’s exterior. The
supplied universal mounting hardware and installed
4-foot cable provides easy and fast installation.
The Model GS1 is a high intensity, strobe light
head intended for use on a vehicle’s exterior. It is
designed for use with Federal’s Model SPS2 (two
head power supply) or Model SPS4 (four head power
supply). These power supplies will provide 75 double
strobe flashes with flash energy of 10 joules per
double flash. The supplied universal mounting
hardware and installed 4-foot cable provides easy
and fast installation.
B. INSTALLATION.
WARNING
This product is intended for supplemental
warning and for use in conjunction with an
approved primary warning light system. This
strobe head can be powered by several types of
strobe power supplies. Consult local codes and
regulations to determine if the power supply/
strobe head combination complies.
NOTE
For maximum coverage and effectiveness, the
light assembly should be mounted in a horizon-
tal orientation.
To install the unit using the supplied bracket and
screws, proceed as follows:
1. etermine the desired mounting location.
Scribe drill position marks on the mounting surface
for the 8mm mounting bolt and for a cable routing
hole (if desired).
2. Assemble the mounting bracket to the light
assembly using the bolt, lockwasher, and nut as
shown in figure 1.
CAUTION
Before drilling holes in ANY part of a vehicle,
be sure that both sides of the mounting surface
are clear of parts that could be damaged; such
as brake lines, fuel lines, electrical wiring or
other vital parts.

Figure 1.
-2-
3. rill a mounting hole and cable routing hole
(if desired) at the previously scribed drill position
marks.
4. Secure the light assembly to the mounting
surface using the bolt, washer, lockwasher, and nut
as shown in figure 2.
C. ELECTRICAL CONNECTIONS.
1. Model GH1.
The grille light assembly is supplied with a 4-
foot cable. The conductors in the cable are color-coded
as shown in figure 3. Use figure 3 as a guide for
connecting a user-supplied flasher. Ensure that the
black lead is connected to a good vehicle ground
point. Also, ensure that an appropriate fuse is
installed as shown.
2. Model GS1.
CAUTION
The strobe grille light assembly is designed to
be used exclusively with Federal Signal’s Model
SPS2/SPS4 power supplies. Use of any other
power supply may cause shortened service life
of the strobe tube.
GRILLE LIGH
ASSEMBLY
POWER
SUPPLY
MACH. BOL ,
8mm x 25mm Lg.,
HEX HEAD
MACH. BOL ,
8mm x 40mm Lg.,
HEX HEAD
290A2668-02
B
MOUN ING
BRACKE
LOCKWASHER,
8mm, S.S.
HEX NU ,
8mm, S.S.
Figure 2.
The light assembly is supplied with an
unterminated 4-foot cable.
When a cable extension kit is used, refer to
the instructions packed with the cable extension kit
(Models SPC16 and SPC30) and the instructions
packed with the power supply.
See figure 4. If a cable extension kit is not
used, crimp the supplied pins on the end of the 4-foot
cable. Insert the pins in the supplied connector
housing and push until they snap into place. The
connector can now be plugged directly into the power
supply.
Test the unit(s) for proper operation.
Figure 3.
290A2668-04B
FLASHER
SUPPLIED
WI H
GRILLE LIGH
BLK
RED
SW
+ 12 VDC
5A
F
GRILLE
LIGH
ASSEMBLY
CUS OMER
SUPPLIED
GRILLE LIGH ASSEMBLY
WI H MOUN ING
BRACKE
POWER
SUPPLY
290A2668-03B
MOUN ING
SURFACE
LOCKWASHER,
8mm
FLA WASHER,
8mm
HEX NU ,
8mm
CABLE HOLE
(IF DESIRED)

-3-
Figure 4.
D. MAINTENANCE.
1. General.
WARNING
Crazing (cracking) of lenses will cause reduced
effectiveness of the light. o not use cleaning
agents (which will cause crazing) such as
strong detergents, solvents, or petroleum prod-
ucts. If crazing of lenses does occur, reliability
of light for emergency signalling purposes may
be reduced until lenses are replaced.
Ordinary cleaning of the plastic lenses can be
accomplished by using mild soap and a soft rag.
Should fine scratches or a haze appear on a lens, they
can ordinarily be removed with a non-abrasive, high
quality, one-step, automotive paste cleaner/wax and
a soft cloth.
2. Model GH1 Lamp Replacement.
CAUTION
Use of higher wattage lamps can result in dam-
age to the colored lenses.
a. See figure 5. Remove and retain the four
screws which secure the lens. Carefully pull the lens
straight away from the grille light assembly.
WARNING
A serious injury may result if lamp is touched
when hot. Always allow lamp to cool before
removing. Halogen lamps are pressurized and
if broken can result in flying glass. Always
wear gloves and eye protection when handling
the lamps.
CAUTION
Service life of lamp will be shortened if glass is
touched. If glass has been handled, clean with
a grease solvent.
b. Remove the defective lamp by carefully
pulling it out of the socket. Install a new lamp by
aligning the pins on the lamp base with the holes in
the socket, and carefully pushing the lamp into the
socket.
c. Replace the lens using the previously
removed screws.
3. Model GS1 Strobe Tube Assembly
Replacement.
WARNING
High voltages are present in a strobe light
system. Wait at least five (5) minutes, after
shutting off power, before servicing the unit.
Failure to do so may result in property damage,
serious injury, or death to you and others.
a. isconnect all power to the strobe system
power supply before performing any maintenance.
b. See figure 5. Remove and retain the four
screws which secure the lens. Carefully pull the lens
straight away from the grille light assembly.
c. Turn the strobe tube assembly counter-
clockwise to unlock it from the finished reflector.
d. isconnect the strobe tube assembly’s
connector from the cable.
CAUTION
Service life of strobe tube will be shortened if
glass is touched. If glass has been handled,
clean carefully with a grease solvent.
e. Connect the new strobe tube assembly’s
connector to the cable.
Figure 5.
290A2668-05
HOUSING
MODEL
SHOWN
LENS
GASKE
LAMP & SOCKE
REFLEC OR, FINISHED
RE AINING
SCREWS(4)
1 2 3
290A2741
S RIP
CRIMP
INSER
CONNEC
DIREC LY O
POWER SUPPLY
RED
WH
BLK

-4-
f. Install the new strobe tube assembly in
the finished reflector, and turn the assembly clock-
wise to lock it into the finished reflector.
g. Replace the lens and secure with the
previously removed screws.
h. Reconnect all power connections to the
power supply and test for proper operation.
E. REPLACEMENT PARTS.
escription Part No.
Lamp, 35 Watt Halogen 8107165
Lamp, 25 Watt Halogen, G4 8107156
Strobe Tube Assy., VAMA 8107157
Socket, Lamp and Cable Assy. 8575029
Lens, Blue, Smooth 8575030
Lens, Blue, Fluted 8575030-01
Lens, Red, Smooth 8575030-02
Lens, Red, Fluted 8575030-03
Lens, Amber, Smooth 8575030-04
Lens, Amber, Fluted 8575030-05
Lens, Clear, Smooth 8575030-06
Lens, Clear, Fluted 8575030-07
Lens, Gasket 8575031
SAFETY MESSAGE TO OPERATORS
Peoples’ lives depend on your safe use of our
products.
Listed below are some important safety instruc-
tions and precautions you should follow:
• Although your warning system is operating
properly, it may not be completely effective.
People may not see or heed your warning
signal. You must recognize this fact and
continue driving cautiously.
• Also, situations may occur which obstruct
your warning signal when natural or man-
made objects are between your vehicle and
others, such as: raising your hood or trunk
lid. If these situations occur, be especially
careful.
• At the start of your shift, you should ensure
that the light is securely attached and oper-
ating properly.
Failure to follow these safety precautions may
result in property damage, serious injury, or death to
you, to passengers, or to others.
RETAIN AND REFER TO THIS MESSAGE