10
10
Model MB1 LED Message Board
Federal Signal
www.fedsig.com
Wiring the LED Message Board System in the Vehicle
Figure 2 LED Message Board wired to control head
290A7198D
12 V BATTERY
+
−
CAT5
BROWN (OPTIONAL)
DEFAULT MESSAGE
RED
100 mA
RED
BLACK
BLACK
5 A
20 A
22 AWG
22 AWG
14 AWG
14 AWG
22 A
WG
22 A
WG
YELLOW
+ IGN
+ IGN
CONTROL HEAD
LED MESSAGE BOARD
2.
Route and connect the 14 AWG black lead to the ground (-NEG) terminal of the vehicle
battery.
3.
Route and connect the 14 AWG red lead through a 20 A fuse at an appropriate circuit
in the vehicle that pr12 V when ignition is activated.
Wiring the Message Board Control Head
For the Message Board to operate properly, the power wires from the control head must
be wired directly to battery power and not to a switched power source. Failure to do so
may reduce the lifetime of its internal battery required to keep accurate time. The control
head also includes an IGN sense wire that, when disengaged, turns off the control head
after 15 seconds. If preferred, the control head includes an active-low wire that activates the
default message (Message One) when battery ground (-NEG) is applied to it. For the wiring
diagrams, see Figures 2 and 3.
To wire the Message Board control head:
1.
Ensure that the lines are adequately fused.
2. WITHOUT A FEDERAL SIGNAL SIREN:
f you are installing the Message Board system
without a Federal Signal Convergence Network siren, insert the Convergence
Network connector from the Message Board into one of the two modular connectors
in the back of the control head. See Figure 2 on page 10.