Product Manual

PART 10: TYPICAL TRAILER WIRING
Note: Not all trailers/vehicles are wired to this standard. The use of an electrical
circuit tester is necessary to ensure proper match of vehicle’s wiring to trailer’s
wiring. On some trailers with 6-way round plugs, the 12V wire and electric brake wire
may be reversed (particularly horse trailers).
Trailer Wiring (View From Front Plug)
GROUND
(GD)
TAIL
LIGHTS
(TM)
ELECTRIC
BRAKES
(EB)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
12V
6-WAY ROUND PIN PLUG
GROUND
(GD)
TAIL/TAG
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
TRAILER SIDE 7-WAY ROUND PIN
SOCKET CONFIGURATION
GROUND
(GD)
12 VOLT
(12V)
TAIL/TAG
BACK-UP
LIGHTS (BU)
ELECTRIC
BRAKE (EB)
TAIL
LIGHTS
(TM)
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
GROUND
BACK-UP
LIGHTS
TAIL LIGHTS
GROUND
4/5 PIN PLUG
7-WAY FLAT PIN PLUG
LEFT
TURN &
BRAKE
RIGHT
TURN &
BRAKE
GROUND
(GD)
TAIL
LIGHTS
(TM)
ELECTRIC
BRAKES
(EB)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
12V
6-WAY ROUND PIN PLUG
GROUND
(GD)
TAIL/TAG
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
TRAILER SIDE 7-WAY ROUND PIN
SOCKET CONFIGURATION
GROUND
(GD)
12 VOLT
(12V)
TAIL/TAG
BACK-UP
LIGHTS (BU)
ELECTRIC
BRAKE (EB)
TAIL
LIGHTS
(TM)
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
GROUND
BACK-UP
LIGHTS
TAIL LIGHTS
GROUND
4/5 PIN PLUG
7-WAY FLAT PIN PLUG
LEFT
TURN &
BRAKE
RIGHT
TURN &
BRAKE
GROUND
(GD)
TAIL
LIGHTS
(TM)
ELECTRIC
BRAKES
(EB)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
12V
6-WAY ROUND PIN PLUG
GROUND
(GD)
TAIL/TAG
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
TRAILER SIDE 7-WAY ROUND PIN
SOCKET CONFIGURATION
GROUND
(GD)
12 VOLT
(12V)
TAIL/TAG
BACK-UP
LIGHTS (BU)
ELECTRIC
BRAKE (EB)
TAIL
LIGHTS
(TM)
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
GROUND
BACK-UP
LIGHTS
TAIL LIGHTS
GROUND
4/5 PIN PLUG
7-WAY FLAT PIN PLUG
LEFT
TURN &
BRAKE
RIGHT
TURN &
BRAKE
GROUND
(GD)
TAIL
LIGHTS
(TM)
ELECTRIC
BRAKES
(EB)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
12V
6-WAY ROUND PIN PLUG
GROUND
(GD)
TAIL/TAG
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
TRAILER SIDE 7-WAY ROUND PIN
SOCKET CONFIGURATION
GROUND
(GD)
12 VOLT
(12V)
TAIL/TAG
BACK-UP
LIGHTS (BU)
ELECTRIC
BRAKE (EB)
TAIL
LIGHTS
(TM)
LEFT
TURN
(LT)
CLEARANCE
AUX
(ABS)
STOP/BRAKE
RIGHT
TURN
(RT)
LEFT
TURN
(LT)
RIGHT
TURN
(RT)
GROUND
BACK-UP
LIGHTS
TAIL LIGHTS
GROUND
4/5 PIN PLUG
7-WAY FLAT PIN PLUG
LEFT
TURN &
BRAKE
RIGHT
TURN &
BRAKE
33