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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 flash pattern, including MODE 3
and INTERSECTION.
LIGHT BAR TEST
PATTERN
Black/White/Red
Flashes the LEDs sequentially and then flashes the
TAKEDOWN and ALLEY lights. Does not test the
Steady Burn LEDs.