User's Manual

5
12
Wheel Speed
Connector
(to Sensor)
Modulator
Connector
(to Modulator)
Trailer Service Air Line
Trailer Wiring
Harness Connector
3
3
2
1
WS-20
™
Wheel Speed Sensor
TAIL
LIGHTS
(BRN)
BRAKE
(RED)
LEFT TURN
LIGHTS
(YLW)
POWER
(BLUE)
MAKER
LIGHTS
(BLK)
GROUND
(WHT)
Trailer Electrical
Connector
Note:
Connector terminals not listed in the chart
are currently not in use.
Typical Trailer Connector
Terminal Allocation
3
3
Wire Harness Connector
(to Trailer Electrical
Connector)
Trailer Electrical
Connector
Spring Brake
Trailer AntiLock
Status Light
M-12R
™
Modulator
1
M-12R
™
Modulator
FIGURE 5 - TYPICAL MC-13
™
MODULATOR CONTROLLER TRAILER WIRING SCHEMATIC
Trailer Wiring Harness
Connector
(Connects to EC-13
™
Controller)
RIGHT
TURN
LIGHTS
(GRN)
Terminal Connection 1K & 2K Battery Power (+) Stop Light Switch 1A & 2A Trailer Ground 3F Trailer Status Lamp 1G Front Modulator Common 2G Front Modulator Hold 2F Front Modulator Exhaust 1D Rear Modulator Common 1C Rear Modulator Hold 1B Rear Modulator Exhaust 3J Left Front Wheel Speed Signal 3H Left Front Wheel Speed Signal 2H Right Front Wheel Speed Signal 3K Right Front Wheel Speed Signal 3E Left Rear Wheel Speed Signal 2C Left Rear Wheel Speed Signal 3D Right Rear Wheel Speed Signal 3C Right Rear Wheel Speed Signal 3A Serial A 3B Serial B