Service manual
A
A
B
B
DGN/RED
DGN
RNG
BLK
LGN/PNK
DGN/YEL
RNG
LGN/DBL
RNG/DBL
RNG
YEL/WHT
YEL
RNG
BLK
BLK
DGN/RED
DGN/LGN
CONTROLS MODULE
DGN/RED
B
C
CONTROLS HARNESS - 6703878
C414
C415
C407C408
RNG
BLK
A
RNG
B
A
RNG
RNG
B
FRONT AUXILIARY
ROD SOLENOID
FRONT AUXILIARY
BASE SOLENOID
LGN/RED
LGN/DBL
LGN/PNK
LGN/RED
B
A
B
A
B
A
REAR AUXILIARY
BASE SOLENOID
REAR AUXILIARY
ROD SOLENOID
C411
C410
YEL/WHT
YEL
BLK
BLK
B
A
A
B
A
B
A
B
C
A
RNG
DGN/LGN
DGN
853 BOSS - WIRING SCHEMATIC
MC2572 (5-25-99)
S/N 508411715-12360
S/N 509711095-11308
(Printed June 1999)
MC2572
HORN
JA B G K H C D E F
A B G J K H C D E F
A C E F B D
FA C E B D
C G K E BD H J A F
FRONT
AUX.
DETENT
RIGHT HANDLE
(IF EQUIPPED)
YEL
BRN
RNG/WHT
B
A
RNG/DBL
DGN
B
C
A
LEFT HANDLE
(IF EQUIPPED)
A
C
B
DGN
RNG/DBL
A
B
HORN
RNG/WHT
BRN
YEL
REAR
AUX.
C401 C402 C403 C404
C114
2
1
PUR/WHT
RNG
DBL/WHT
BLK
RED/WHT
IGNITION SWITCH
B
I
SO
RED/WHT
C204
TO OPTIONS
(FRONT WIPER)
FLASHER
BRN
BLK
PUR/RED
BOSS DISPLAY
4
3
2
1
D
E
A
C
B
PUR/RED
PUR/WHT
RNG
BLK
PUR/RED
PUR/WHT
BLK
DIAGNOSTIC PORT
DGN/WHT
DGN/WHT
C119
BRN
BRN
DBL
BLK
WHT
RNG
RED/WHT
BLK
RNG
RNG
ST
BRN
LCD DISPLAY MONITOR
BLK
WHT
DBL/WHT
PNK
PUR/WHT
PUR/RED
RNG
RNG
BLK
RNG
BLK
BLK
RNG
RNG
PUR/RED
PUR/WHT
WHT/RNG
RNG/WHT
RNG/WHT
YEL/RED
BLK
BLK
PUR/RED
YEL/LBL
BLK
BLK
PUR
BLK
YEL/LBL
BLK
YEL/BRN
BLK
YEL/DBL
DBL/YEL
HR
A
STARTER RELAY
SHUTDOWN RELAY
WIRES CONNECT BY
L
ETTER ACROSS
CONNECTORS
A
B A
B
WHT/LGN
GLOW PLUG RELAY
M
S
B
STARTER
BATTERY
RED
RED
G
RED
S
ALTERNATOR
B
RED
RED
87
87A
30
86
85
BLK
DBL/WHT
PNK
BLK
85
87
87A
LBL/RNG
RED
BLK
RED
86
30
85
WHT
WHT/LGN
87
87A
SOME CONNECTOR
BODIES NOT SHOWN
FOR DRAWING CLARITY
BLK
RNG
h
BLK
C121
RNG
GLOW
PLUGS
BOSS
FUEL SHUTOFF
S
OLENOID
LGN
C118
LGN/WHT
PUR
EXC
RED
YEL/DGN
RNG/DBL
86
30
AUXILIARY
HOURMETER AND
HARNESS (IF EQUIPPED)
ENGINE RPM
(MAGNETIC PICKUP)
#
H2
*
*
*
G1
C3
PIN NUMBER = 30 PIN CONNECTOR
*
C3
*
*
*
C2
D3
C1
#
#
#
#
#
#
C2
A2
A3
B1
B2
B3
*
*
*
*
F3
E1
B2
B1
#
#
#
#
C1
D3
D2
#
E3
*
*
*
*
*
*
*
*
D1
D2
E2
E3
H1
H3
B3
A1
#
PIN NUMBER = 18 PIN CONNECTOR
*
*
*
*
*
*
*
F2
G2
G3
J1
J3
J2
K1
#
#
#
F3
E2
F2
*
*
*
*
F1
K2
A3
A2
#
#
#
F1
E1
A1
BACKUP
ALARM
A
BLK
BLK
PNK
PNK
BLK
DBL/WHT
BLK
BLK
DBL/WHT
RNG/DGN
PNK
RNG
LEFT
TAILLIGHT
RIGHT
TAILLIGHT
LGN/RED
RED
LGN/PNK
RNG
DGN/YEL
LGN/DBL
AUXILIARY HYDRAULIC SWITCH
(IF EQUIPPED)
D
C
E
F
B
A
E
B
A
RED
C
D
F
LBL/BLK
RED
LGN/DBL
DGN/YEL
RNG
LGN/PNK
LGN/RED
PUR/LBL
BLK
D1
LBL/WHT
RED
RED
REAR LIGHT HARNESS - 6577648
B
C
LEFT
WORK
LIGHT
RIGHT
WORK
LIGHT
B
C
WHT/BLK
BLK
RNG
RED/WHT
C110
ACC
OFF
RUN
START
BLK
DBL
BRN
LEFT
HEADLIGHT
(IF
EQUIPPED)
RIGHT
HEADLIGHT
(IF
EQUIPPED)
LEFT
FLASHER
LAMP
(IF
EQUIPPED)
RIGHT
FLASHER
LAMP
(IF
EQUIPPED)
DETENT LIGHT
MODE LIGHT
BLK
BLK
HYDRAULIC
CHARGE
PRESSURE
RNG
BLK
LBL/BLK
*
D1
RED/WHT
ENGINE HARNESS (BOSS) - 6702898
DIODE
RED/WHT
ACCESSORY FUSE
RED/WHT
ENGINE FUSE
RED/WHT
CAB HARNESS (BOSS) - 6702610
C115C201
RETURN FILTER
PRESSURE
HYDRAULIC
OIL
PRESSURE
PRE-FILTER
PRESSURE
HYDRAULIC
OIL
TEMPERATURE
COOLANT
LEVEL
AIR
FILTER
ENGINE OIL
PRESSURE
FUEL
LEVEL
ENGINE
COOLANT
LIGHT SWITCH
(IF EQUIPPED)
B1
B2
WARNING
HEADLIGHT
REAR WORK
TAIL
RED/WHT
PNK
RESISTOR
5 OHM
C106
C122
C120
C116
C203
C216
C107
RED
BA
A B
B A
B A
BC A G J F K D H E
RNG
TO OPTIONS
C105
TO OPTIONS
RED/WHT
C108
RED/WHT
GRY = GREY
WHT = WHITE
PUR = PURPLE
TAN = TAN
BRN = BROWN
PNK = PINK
YEL = YELLOW
DGN = DARK GREEN
LGN = LIGHT GREEN
DBL = DARK BLUE
LBL = LIGHT BLUE
BLK = BLACK
RNG = ORANGE
RED = RED