Service manual
C114
C216
MC2561 (5-25-99)
S/N 508411001-11010
(Printed June 1999)
MC2561
853 BOSS - WIRING SCHEMATIC
START
RUN
OFF
ACC
2
1
PUR/WHT
RNG
RNG
DBL/WHT
RNG
WHT
BLK
RED/WHT
IGNITION SWITCH
B
I
ST
SO
BLK
PUR/RED
C204
BLK
TO OPTIONS
(FRONT WIPER)
LIGHT SWITCH
(IF EQUIPPED)
CAB HARNESS (BOSS) - 6576352
FLASHER
BRN
BRN
BRN
LEFT
FLASHER
LAMP
(IF
EQUIPPED)
BOSS DISPLAY
4
3
2
1
D
E
A
C
B
PUR/RED
PUR/WHT
RNG
BLK
RED
PUR/RED
PUR/WHT
BLK
DIAGNOSTIC PORT
C115
C201
DGN/WHT
DGN/WHT
C119
DBL
LEFT
HEADLIGHT
(IF
EQUIPPED)
BLK
RED/WHT
PNK
RNG
RED
RED
RED
RED/WHT
ACCESSORY FUSE HOLDER
RED/WHT
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
AIR
FILTER
HR
C
A
B
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/BLK
LBL/RNG
RED
BLK
RED
86
30
85
WHT
87
87A
C107
SOME CONNECTOR
BODIES NOT SHOWN
FOR DRAWING CLARITY
BLK RNG
h
BLK
C121
RNG
GLOW
PLUGS
BOSS
FUEL SHUTOFF
S
OLENOID
FUEL
LEVEL
ENGINE OIL
PRESSURE
ENGINE
COOLANT
LGN
C118
LGN/WHT
PUR
EXC
B
RED
YEL/DGN
RNG/DBL
WHT/BLK
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
#
#
#
#
D1
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
ENGINE HARNESS (BOSS) - 6579653
BACKUP
ALARM
A
B
C
BLK
BLK
PNK
PNK
BLK
DBL/WHT
BLK
BLK
DBL/WHT
RNG/DGN
PNK
RNG
LEFT
TAILLIGHT
RIGHT
TAILLIGHT
REAR LIGHT HARNESS - 6577648
LEFT
W
ORK
LIGHT
RIGHT
WORK
LIGHT
LGN/RED
RED
LGN/PNK
RNG
DGN/YEL
LGN/DBL
DETENT LIGHT
MODE LIGHT
AUXILIARY HYDRAULIC SWITCH
(IF EQUIPPED)
D
C
E
F
B
A
E
B
A
RED
C
D
F
RED
LGN/DBL
DGN/YEL
RNG
LGN/PNK
B
LGN/RED
PUR/LBL
BLK
LBL/WHT
RED
RED
C106
RETURN FILTER
PRESSURE
PRE-FILTER
PRESSURE
HYDRAULIC
OIL
PRESSURE
COOLANT
LEVEL
HYDRAULIC
OIL
TEMPERATURE
HYDRAULIC
CHARGE
PRESSURE
BLK
RED
RNG
RED/WHT
A
B
BLK
RNG
BLK
BLK
DGN/RED
DGN/WHT
C110
C414
C415
C407C408
YEL/LGN
BLK
RNG
B
CONTROLS MODULE
FRONT AUXILIARY
R
OD SOLENOID
FRONT AUXILIARY
BASE SOLENOID
CONTROLS HARNESS - 6579881
DGN
DGN/LGN
RNG
RNG
LGN/DBL
LGN/PNK
LGN/RED
DGN/YEL
LGN/PNK
LGN/RED
LGN/DBL
RNG
B
A
B
A
B
A
B
A
C411
C410
BLK
BLK B
A
A
B
A
B
A
B
REAR AUXILIARY
ROD SOLENOID
REAR AUXILIARY
BASE SOLENOID
YEL/WHT
YEL
DGN/LGN
RNG
DGN/RED
DGN
DGN/RED
YEL/WHT
DGN/WHT
YEL/LGN
DGN/RED
YEL
LBL/RED
A
B
FOR FUTURE USE
C413
LBL/RED
BLK
C402
B
A
C403
A
B
C404
RNG
DGN
B
A
A
B
DGN/RED
DGN/LGN
CONTROLS HARNESS -
6576323
BLK
DBL
BRN
RIGHT
HEADLIGHT
(IF
EQUIPPED)
RIGHT
FLASHER
LAMP
(IF
EQUIPPED)
C122
BLK
BLK
RNG
BLK
LBL/BLK
*
D1
B
A
CONTROLS HARNESS -
6576297
RNG
YEL
RNG/DBL
FUSE
IGNITION FUSE HOLDER
C120
C116
HORN
B2
B1
WARNING
HEADLIGHT
REAR WORK
TAIL
FUSE
FRONT AUX.
R
IGHT HANDLE
(IF EQUIPPED)
DETENT
LEFT HANDLE
(IF EQUIPPED)
HORN
REAR AUX.
RED/WHT
RESISTOR
5 OHM
C203
A
A B
B A
B A
AC G J K HF D E
JC K G H F A D B E
FDE A K J H G C
BE D F A K J H G C
B A D F E C
B A D F E C
RNG
C105
TO OPTIONS
C108
RED/WHT
TO OPTIONS
GRY = GREY
W
HT = 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