17
Installation, Maintenance, and Service Manual
Federal Signal
www.fedsig.com
Wiring the Allegiant Light Bar
3.
Splice the appropriate cables into the vehicle’s wiring. See Figure 2. The input
leads require a positive (+) 12 Vdc signal to activate.
Figure 2 Stop/turn/tail wiring between light bar and vehicle harness
4.
Reconnect the battery’s positive terminal and then the negative terminal.
5.
Test to verify that the light bar’s stop/turn/tail lights turn on and off with the
vehicle’s stop/turn/tail lights.
Table 6 Wire functions and fuse
requirements
Wire Color
Fuse Function
Red
20 A
Front Mode 1
Yellow
20 A
Rear Mode 1
Blue
12 A
Worklight/Bed Light
Orange
12 A
Scene Front
Gray
5 A
Right SignalMaster
Green
5 A
Left SignalMaster
Brown
N/A
Mode 2 Override
Brown/White N/A
Dimming
Black
N/A
Ground
Table 7 Allegiant Discrete with
Preterminated Weathertight Connectors
Wire Color
Fuse Function
Red
20 A
Front Mode 1
Red/Black
20 A
Rear Mode 1
Yellow/Black 12 A
Worklight/Bed Light
Yellow
5 A
Taillights
Orange
5 A
Left Turn/Brake
White
5 A
Right Turn/Brake
Blue/Black
N/A
Mode 2 Override
Light Blue
N/A
Dimming
Black
N/A
Ground
Connecting Power to the Light Bar
NOTE:
Plan the location of the wire-routing hole in the vehicle roof so that the power
and communication cables do not have tight bends and have some slack to ease
removal.
BATTERY EXPLOSION: 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 cause
a battery explosion that could result in vehicle damage and serious injury.
SEAT REMOVAL PRECAUTION: If a vehicle seat is temporarily removed, verify
with the vehicle manufacturer if the seat needs to be recalibrated for proper
airbag deployment. Failure to follow this warning may cause serious injury or
death.
