9
EM3 Extension Module
Installation and Maintenance Instructions
Figure 2 EM3 wring diagram
1
2
3
4
5
6
EXTENSION
MODULE ASSY
PIN 1
PIN 6
290A7794
PIN 1
P3
P2
P1
PIN 6
PIN 1
(MOUNTED ON CONNECTOR BOARD)
BLUE
YELLOW
BLACK 18 AWG
TO POWER SOURCE
(REFER TO INSTALLATION
INSTRUCTIONS)
CONNECTOR BOARD
TO POWER
SOURCE (DC MODELS):
NOTE POLARITY)
TO POWER SOURCE
(125 Vdc AND
250 Vdc UNITS)
RED 18 AWG.
WHITE
PIN 6
TONE CONNECTOR 1
EXTENSION MODULE WIRING DIAGRAM
TONE CONNECTOR 2
TONE CONNECTOR 3
RED
BALLAST
RESISTOR
BLK
+
-
TONE 1 SW
TONE 2 SW
TONE 3 SW
22 K,
1/4 W
DASHED LINES INDICATE CONNECTIONS FOR 125 VDC AND 250 Vdc UNITS.
DPDT SWITCHES AND BALLAST RESISTOR ARE USED ON 125 Vdc AND 250 Vdc UNITS.
Ordering Replacement Parts
To order replacement parts, please call Federal Signal Customer
Support at 708-534-4756 or 877-289-3246.
