Service manual
RED = RED
RNG = ORANGE
BLK = BLACK
LBL = LIGHT BLUE
DBL = DARK BLUE
LGN = LIGHT GREEN
DGN = DARK GREEN
YEL = YELLOW
PNK = PINK
BRN = BROWN
TAN = TAN
PUR = PURPLE
WHT = WHITE
GRY = GREY
RED
C216
C203
C124
C116
RED/WHT
TAIL
REAR WORK
HEADLIGHT
WARNING
B2
B1
(IF EQUIPPED)
LIGHT SWITCH
C115C201
TO ENGINE
HORN
BLK
RNG/DBL
RNG/DBL
CAB HARNESS (BOSS) - 6704407
RED/WHT
MODE LIGHT
DETENT LIGHT
EQUIPPED)
(IF
LAMP
FLASHER
RIGHT
EQUIPPED)
(IF
LAMP
FLASHER
LEFT
EQUIPPED)
(IF
HEADLIGHT
RIGHT
EQUIPPED)
(IF
HEADLIGHT
LEFT
BRN
DBL
BLK
START
RUN
OFF
ACC
A
B
F
E
C
D
(IF EQUIPPED)
AUXILIARY HYDRAULIC SWITCH
LGN/DBL
DGN/YEL
RNG
LGN/PNK
RED
LGN/RED
LCD DISPLAY MONITOR
BRN
ST
RNG
RNG
BLK
PNK
RED/WHT
RNG
WHT
BLK
DBL
BRN
BRN
DGN/WHT
DGN/WHT
DIAGNOSTIC PORT
BLK
PUR/WHT
PUR/RED
BLK
RNG
PUR/WHT
PUR/RED
B
C
A
E
D
1
2
3
4
BOSS DISPLAY
PUR/RED
BLK
BRN
FLASHER
(FRONT WIPER)
TO OPTIONS
C204
RED/WHT
SO
I
B
IGNITION SWITCH
RED/WHT
BLK
DBL/WHT
RNG
PUR/WHT
1
2
C114
C404C403C402C401
AUX.
REAR
YEL
BRN
RNG/WHT
HORN
B
A
RNG/DBL
DGN
B
C
A
(IF EQUIPPED)
LEFT HANDLE
A
C
B
DGN
RNG/DBL
A
B
RNG/WHT
BRN
YEL
(IF EQUIPPED)
RIGHT HANDLE
DETENT
AUX.
FRONT
BFEKJHD AGC
DBECA F
DBECA F
FEDCHKJGBA
FEDCHKJGBA
C411
C415
C414
HORN
CONTROLS HARNESS - 6703878
DGN/RED
DGN
RNG
DGN/RED
RNG
A
DGN/LGN
C
YEL
YEL/WHT
BASE SOLENOID
REAR AUXILIARY
ROD SOLENOID
REAR AUXILIARY
B
A
B
A
B
A
A
B
BLK
BLK
C410
A
B
A
B
A
B
A
B
RNG
LGN/DBL
LGN/RED
LGN/PNK
DGN/YEL
LGN/RED
LGN/PNK
LGN/DBL
RNG
RNG
YEL
YEL/WHT
RNG
B
DGN
RNG
BASE SOLENOID
FRONT AUXILIARY
ROD SOLENOID
FRONT AUXILIARY
CONTROLS MODULE
A
B
RNG
BLK
RNG/DBL
C408 C407
C
B
DGN/LGN
DGN/RED
BLK
BLK
RNG
BLK
B
A
A
RED/WHT
C108
RED/WHT
TO OPTIONS
TO OPTIONS
C105
RNG
AB
AB
EHDKFJGAC B
AB
AB
BA
A B
5 OHM
RESISTOR
FILTER
AIR
LEVEL
COOLANT
TEMPERATURE
OIL
HYDRAULIC
PRESSURE
PRE-FILTER
PRESSURE
OIL
HYDRAULIC
PRESSURE
RETURN FILTER
C120
BLK
YEL/LBL
A
B B
A
TRANSDUCER HARNESS - 6704345
C123
PRESSURE
CHARGE
HYDRAULIC
RNG
RED
TO OPTIONS
C106
RNG/DGN
RNG
LIGHT
WORK
RIGHT
LIGHT
WORK
LEFT
REAR LIGHT HARNESS - 6704232
TAILLIGHT
RIGHT
TAILLIGHT
LEFT
BLK
DBL/WHT
BLK
PNK
PNK
BLK
BLK
ALARM
BACKUP
RNG/DGN
RNG
D
C
D
C
EE
RED/WHT
ENGINE FUSE
RED/WHT
ACCESSORY FUSE
RED/WHT
DIODE
D1
*
LBL/BLK
BLK
RNG
BLK
BLK
C122
C110
RED/WHT
RNG
BLK
6660316 WAS 6651570
VACUUM SWITCH
RED
RED
LBL/WHT
BLK
PUR/LBL
LGN/RED
LGN/PNK
RNG
DGN/YEL
LGN/DBL
RED
F
D
C
RED
A
B
E
PNK
DBL/WHT
BLK
B
F
A
ENGINE HARNESS (BOSS) - 6704234
A1
E1
F1
#
#
#
A2
A3
K2
F1
*
*
*
*
F2
E2
F3
#
#
#
K1
J2
J3
J1
G3
G2
F2
*
*
*
*
*
*
*
PIN NUMBER = 18 PIN CONNECTOR
#
A1
B3
H3
H1
E3
E2
D2
D1
*
*
*
*
*
*
*
*
E3
#
D2
D3
C1
D1
#
#
#
#
B1
B2
E1
F3
*
*
*
*
B3
B2
B1
A3
A2
C2
#
#
#
#
#
#
C1
D3
C2
*
*
*
C3
*
PIN NUMBER = 30 PIN CONNECTOR
C3
G1
*
*
*
H2
#
(MAGNETIC PICKUP)
ENGINE RPM
TO OPTIONS
HERE OR
HARNESS (IF EQUIPPED)
HOURMETER AND
AUXILIARY
30
86
WHT/BLK
RNG/DBL
YEL/DGN
6651664
RED
EXC
PUR
LGN/WHT
C118
LGN
COOLANT
ENGINE
PRESSURE
ENGINE OIL
LEVEL
FUEL
SOLENOID
FUEL SHUTOFF
BOSS
PLUGS
GLOW
RNG
C121
BLK
h
RNG
BLK
FOR DRAWING CLARITY
BODIES NOT SHOWN
SOME CONNECTOR
C128
87A
87
WHT/LGN
WHT
85
30
86
RED
BLK
RED
LBL/RNG
LBL/BLK
87A
87
85
BLK
PNK
DBL/WHT
BLK
85
86
30
87A
87
RED
RED
B
ALTERNATOR
S
G
RED
RED
BATTERY
STARTER
B
S
M
GLOW PLUG RELAY
WHT/LGN
B
AB
A
C
ONNECTORS
LETTER ACROSS
WIRES CONNECT BY
SHUTDOWN RELAY
S
TARTER RELAY
F
A
B
HR
DBL/YEL
YEL/DBL
BLK
YEL/BRN
BLK
YEL/LBL
BLK
PUR
BLK
BLK
YEL/LBL
PUR/RED
BLK
BLK
YEL/RED
RNG/WHT
RNG/WHT
WHT/RNG
PUR/WHT
PUR/RED
RNG
RNG
BLK
BLK
RNG
BLK
RNG
RNG
PUR/RED
PUR/WHT
PNK
DBL/WHT
WHT
BLK
C119
853 BOSS - WIRING SCHEMATIC
M
C2563
(Printed June 1999)
S/N 510375001-75092
S/N 510250001-50161
S/N 509711335-15096
S/N 508412461-15055
MC2563 (5-25-99)