2561263C
REV. C 407
Printed in U.S.A.
INSTRUCTION SHEET
FOR
SIGNALMASTER™ MODELS SM518A AND SM428A
SAFETY MESSAGE TO INSTALLERS
People’s lives depend on your safe instal-
lation 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 in-
structions 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.
• 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 proper-
ly, 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 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.
• Do 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.
I.
GENERAL.
The Federal SignalMaster™ Models SM518A and
SM428A are economical, low wattage, directional light as-
semblies that are designed for use in a flashing mode. Lens
colors available are: amber (standard), red, blue, green, and
clear.
These models provide two distinctive directional sig-
nals: left arrow and right arrow. In addition, an alternating
flash pattern produces a warning signal for use when a di-
rectional signal may not be appropriate. When a directional
signal is selected, the lamps are individually illuminated
in a sequential sweeping motion until all eight lamps are
illuminated.
II. SPECIFICATIONS.
Input Voltage
11VDC to 16VDC.
Polarity
Negative ground only.
Operating Temperature -30° C to +65° C.
Range
Standby Current
Zero amperes.
+BAT Fuse
25 amperes.
Output Drive
8, 27 watt lamps.
Capability (Total)
Flash Rate:
Directional
35 patterns/min.
Warn
60 patterns/min.
Dimensions:
SM518A
SM428A
Height
2.6"
2.6"
Length
50.9"
42.0"
Depth
3.4"
3.4"
Cable Length
35'
15'
These lights are intended for secondary
warning only. They are not intended for use
as a primary warning system.
