t300 Electrical Schematic v-0685-6

SWITCHED POWER 1000-1999 RNG
GROUND 2000-2999 BLK
MONITORING 3000-3999 LBL
HYDRAULIC 4000-4999 LGN
ATTACHMENT CONTROLS 5000-5999 YEL
LIGHTS 6000-6999 PNK
ACCESSORIES 7000-7999 WHT
ENGINE 8000-8999 TAN
COMMUNICATION 9000-9999 PUR
WIRES CONNECT BY LETTER
ACROSS CONNECTORS
A
B
B
A
SOME CONNECTOR
BODIES NOT SHOWN
FOR DRAWING CLARITY
RED = RED
RNG = ORANGE
BLK = BLACK
LBL = LIGHT BLUE
DBL = DARK BLUE
LGN = LIGHT GREEN
DGN = DARK GREEN
YEL = YELLOW
PNK = PINK
WHT = WHITE
BRN = BROWN
TAN = TAN
PUR = PURPLE
GRY = GRAY
3
STARTER
3400
3420
15
47
HYDRAULIC CHARGE
PRESSURE SENDER
0.5 - 7.5 V
3410
F
E
A
+
-
C
B
A
F
E
A
UNSWITCHED POWER 1000-1999 RED
FUSED, UNSWITCHED POWER 1000
-1999 RED/WHT
3010
23
3500
3520
49
37
ENGINE OIL
PRESSURE
SENDER
0.5-7.5 V 3510
3500
3520
B
C
A
C107
-
C
B
B
C
A
4350
2350
TWO SPEED
SOLENOID
A
B
C
4
4
1
7.5 ohm
12V
A
B
4390
2360
TWO SPEED
MAKE-UP
A
B
C
4
3
7
5 ohm
12V
A
B
4460
2460
HIGH FLOW
A
B
C
4
1
5
7.5 ohm
12V
A
B
3310
3430
3300
D
C
B
HYDRAULIC
TEMPERATURE
SENDER
500-3000 ohm
HYDRAULIC OIL
FILTER SWITCH
3430
D
C
B
H
Y
D
R
A
U
L
I
C
F
I
L
T
E
R
6
7
1
7
2
4
7
3300
3310
B
A
B
A
C477
C102
C
B
S
E
E
J
2
S
E
E
J
2
B
C
A
B
C
A
3410
3420
3400
J1
J1
A
B
6733137
FUEL
SHUTOFF
8820
P
U
L
L
HOLD
B
A
A
B
8120
15 ohm
0.5 ohm
B
C
A
B
C
A
8100
8800
2800
2390
2380
2410
2420
2400
2200
2370
2430
2000
2100
2360
2440
2450
2460
2330
2340
2480
2740
2720
2730
2710
GROUNDS
2110
2120
2300
2520
2530
2240
2600
3510
3610
2800
2350
11
7
23
2300
3210
4460
2460
A
B
WIRING SCHEMATIC
(With SJC Option)
T300 (S/N 525414000 & Above)
(S/N 525512000 & Above)
(PRINTED FEBRUARY 2005)
V-0685
1 of 6
Dealer Copy -- Not for Resale
E3
D3
12 30
42
39
13
19
28
33
4032
8210
8250
1110
1120
1130
8150
8110
4730
8510
8550
8000
6210
6320
10
22
4150
4110
14 24
34
44
9700
9600
9500
9800
25
17
20
8800
4200
1
4
0
0
41
3
38
2100
15
47
23
49
37
4350
2350
4390
2360
6410
6510
B
L
U
E
T
I
E
S
T
R
A
P
4460
2460
C
4
2
2
21
41
7.7
PWM
4380
2380
1
2
1
2
LIFT SPOOL LOCK
(NOT Used With AHC or ACS)
4410
4360
4340
4330
4340
2340
3.3
PWM
1
2
1
2
C
4
1
8
3
FRONT ROD
1
4420
4450
4430
4440
29
32
C413
4430
2430
REAR ROD
7.5 ohm
12V
BROWN TIE STRAP
A
B
A
B
C
4
1
4
4440
2440
REAR BASE
7.5 ohm
12V
WHITE TIE STRAP
A
B
A
B
C423
A
B
4420
2420
BUCKET POSITIONING
9.8 ohm
12V
A
B
C416
4450
2450
DIVERTER
7.5 ohm
12V
YELLOW TIE STRAP
A
B
A
B
9
7
2
0
0
36
4390
6
4350
31
4460
18
25
TRAVEL
CONTROL
4730
36
GLOW PLUG
FEEDBACK
8550
45
+5V
SUPPLY
J1
P01
14
CAN
HIGH
9500
24
CAN
LOW
9600
34
CAN
SELECT
9700
33
UNSWITCHED
BATTERY (3)
1130
13
UNSWITCHED
BATTERY (1)
1110
2
OPEN
35
OPEN
44
ATTACHMENT
KEY INPUT
9800
42
SWITCH PWR /
ACC RELAY
8000
9
29
19
PWM +8V
SUPPLY
PWM -
PWM
SIGNAL
4320
4310
4300
40
RH SKI
UP
4940
36
LH SKI
UP
4840
30
RH SKI
DOWN
4930
26
LH SKI
DOWN
4830
6
LH AUX
RIGHT
4810
16
LH AUX
LEFT
4820
20
RH FRONT
4920
31
OPEN
31
TWO SPEED
SOLENOID
4350
35
SEATBAR
GROUND
49
ENG OIL
PRESS SIGNAL
3520
43
FLOAT
4640
5
SYSTEM
Tx
9100
15
SYSTEM
Rx
9200
14
PROTECTED
POWER
1200
24
COMPUTER
POWER
1900
34
KEY/ENTER
SWITCH
9350
25
SEAT BAR
+8v
3900
45
SEATBAR
SIGNAL
3920
44
HEADLIGHT
SWITCH
9340
2
SPARE
ANALOG 1
5
RESERVED
(BOOTSTRAP)
23
STATUS
IN
9400
46
BRAKE SW
IN
4500
21
SPARE
DIGITAL 2
11
RESERVED
(hall)
10
TRACTION LOCK
PULL / 963
4110
7
L HAND
SERIAL IN
9210
12
STARTER
FEEDBACK
8250
40
FUEL PULL
RELAY
8110
7
SPARE
OUTPUT 1
10
ENG SPEED
3600
8
LEFT
BLINKER
15
HYD CHARGE
PRESS +8V
3400
9
GLOW PLUG
RELAY
8510
23
SENSOR
GROUNDS
3010
27
OPEN
30
STARTER
RELAY
8210
16
RIGHT
BLINKER
32
FUEL PULL
FEEDBACK
8150
17
TRACTION
LOCK HOLD
4200
18
AIR FILTER
SIGNAL
3700
18
4460
HIGH FLOW /
900 LOAD
47
HYD CHARGE
PRESS SIGNAL
3420
19
REAR WKLT
RELAY
6210
28
FUEL
SENDER
3100
20
FUEL RELAY
HOLD
8800
22
TRACTION LOCK
PULL FEEDBACK
4150
28
UNSWITCHED
BATTERY (2)
1120
27
RESERVED
(SENSOR GRND)
43
RESERVED
(CAN SHIELD)
26
F&R AUX
RELIEF
4470
4
COMPUTER
GROUND
2900
3
HYD FILTER
SIGNAL
3430
29
DIVERTER
4450
8
COOLANT
TEMP SIGNAL
3200
1
RESERVED
(AC INPUT)
MARKER
LT RELAY
39
6320
OPEN
37
37
ENG OIL
PRESS +8v
3500
41
HANDLE
POWER
1400
33
OPEN
46
SPARE
OUTPUT 2
38
GROUND
2110
48
HORN
50
RESERVED
(FAN OUTPUT)
1
SPOOL
LOCK
13
SPARE
ANALOG 2
3
FRONT
ROD
4330
41
HYD LOCK
SOLENOID
4410
12
REAR
BASE
4440
32
BUCKET
POSITION
4420
21
FRONT
BASE
4340
22
REAR
ROD
4430
42
STATUS
OUT
9410
3910
49
OPEN
39
OPEN
47
OPEN
38
GROUND
2100
48
HYDRAULIC
TEMP
3300
50
OPEN
17
SPARE
DIGITAL 1
4
TWO SPEED
SWITCH
4910
6
TWO SPEED
MAKE-UP
4390
4360
11
R HAND
SERIAL IN
9110
6510
6410
7200
10
3600
J2
P05
8
48
12 22
J2
J
1
J1
J1
38
38
2110
3
3
0
0
3200
8
3700
18
48
10
C
S
E
E
J
1
26
4480
C417
4480
2480
REAR AUX RELIEF
9.8 ohm
12V
A
B
A
B
2 of 6
Dealer Copy -- Not for Resale
4310
4320
1400
4300
4920
4940
4930
4840
4830
4820
4810
41
6
16
26
36
30
20
19
29
9
492
0
494
0
493
0
431
0
432
0
430
0
1
4
9
0
253
0
423
0
482
0
481
0
484
0
483
0
148
0
42
4
25
2
464
0
4640
K G L
SEAT
BAR
A
C
B
3920
3910
3900
9340
1210
1910
9210
9110
9300
9310
9320
9330
2910
START
BUZZER
CLOCK/LATCH
DATA
SYSTEM Tx
SYSTEM Rx
COMPUTER POWER
PROTECTED POWER
GROUND
HEADLIGHTS
H
G
A
D
B
E
J
F
C
K
RIGHT PANEL
9330
9310
9300
9120
9220
1920
1220
9350
2920
OPEN
START
CLOCK/LATCH
DATA
SYSTEM Rx
SYSTEM Tx
COMPUTER POWER
PROTECTED POWER
GROUND
RUN/ENTER SWITCH
F
J
E
B
D
A
G
H
C
K
9320
2930
9340
9350
9200
9100
6100
1900
1200
BUZZER
LEFT PANEL
FRONT
WORKLIGHTS
B R P E D C A
2750
2740
2760
2770
2910
2900
2930
2920
CAB 6727178
2740
2900
M
LEFTRIGHT
C435 C434
B
A
B
A
6120
B
A
B
A
CAB
MAIN
FRAME
2000
1930
B
R
A
K
E
S
W
I
T
C
H
FS
4500
HJN
2770
2750
2
7
6
0
6110
C421
4370
2
3
7
0
7.7 ohm
PWM
7.7 ohm
PWM
1
2
1
2
TILT SPOOL LOCK
(NOT Used With AHC or ACS)
LIFT SPOOL LOCK
NOT Used With AHC or ACS
)
3.3 ohm
PWM
4330
2340
FRONT BASE
1
2
C419
B
I
C
S
H
Y
D
R
A
U
L
I
C
L
O
C
K
4410
A
B
C420
9.8 ohm
12V
A
B
2410
40
C407
3910
3920
3900
9340
9100
9200
1900
1200
9350
2900
5
15
44
35
45
25
34
4
14
24
C408
SEE FUSE/RELAY CENTER
THIS PAGE
9340
9350
9200
9100
6100
3910
2900
2740
1900
1200
K G L B R P ME D C A
F
S
N J
H
4500
3900
3920
A
4500
46
+8
-
9
29
19
PWM
+8V
SUPPLY
PWM -
PWM
SIGNAL
4320
4310
4300
40
RH SKI
UP
4940
30
RH SKI
DOWN
4930
20
RH FRONT
DETENT
4920
10
ENG SPEED
SIGNAL
3600
49
OPEN
39
OPEN
50
OPEN
4
SPEED
SENSOR
3610
3600
B
A
B
A
C
B
A
F
U
E
L
S
E
N
D
E
R
3
0
-
2
7
0
o
h
m
B
A
3100
3110
B
A
C476
C106
J2
J1
J2
491
0
4910
2330
C405
C406
28
3110
3100
3100
AIR FILTER
SWITCH
3710
B
A
B
A
3700
B
3200
8
3700
18
B
A
S
E
E
J
1
B
A
12
J
1
C
ENGINE
COOLANT
SENDER
500-3000 ohm
B
A
3200
3210
B
A
C104
t
23
42
9410
9400
9210
9110 D
E
G
F
11
7
3 of 6
Dealer Copy -- Not for Resale
BAT
25A
25A
1720
1700
1800
1730
6600
6500
6400
6200
6310
7100
FUSE 10
FUSE 11
1310
1080
1300
1060
1040
+
-
100A
1030
BATTERY
REAR LT
30A
FUEL PULL FR & MK LT
COMPUTER
UNSWITCHED
ATTCHMNT
ACS
ALT & KITS
FRONT &
MARKER
LIGHT
GLOW
PLUG
REAR
LIGHT
STARTER
SWITCH
POWER
15A
15A
25A
25A
25A
25A
25A
HEATER
FUEL
PULL
25A
TRACTION
PULL
TRACTION
30A
FUSE 7
FUSE 8
FUSE 9
FUSE 10
FUSE 11
FUSE 12
FUSE 1
FUSE 2
FUSE 3
FUSE 4
FUSE 5
FUSE 6
TO OPTIONS
(BACKUP ALARM
SWITCH)
B
A
G
D
E
C
H
A
1010
C489
TO OPTIONS
(ACCESSORY
CONNECTOR)
1700
1140
2600
1150
1720
2720
6400
6500
6600
D
N
C
F
P
L
E
M
H
A
S
R
B
A
4275
4550
4730
4235
6300
1050
J
K
G
B
BACKUP
ALARM
6210
6200
LEFT
WORKLIGHT
RIGHT
WORKLIGHT
LEFT
TAILLIGHT
2610
63302640
6320
RIGHT
TAILLIGHT
2650
6210
2620
2630
6200
2600
7
1
0
0
6310
G
D
E
C
H
F
B
A
1020
1800
1015
8200
8250
1015
R
STARTER
S
M
ALTERNATOR
2015
A
B
1020
B
2730
F
TAILGATE / WORKLIGHTS 6716419
C110
1140
FUSE
1
25A
A
B
(
HEATER
)
(ATTACHMENT)
(
ALTERNATOR
& KITS)
C488
C103
A
B
A
B
C109
L
L
A
B
8100
C404
TO OPTIONS
(ACCESSORY
CONNECTOR)
RELAY GROUNDS
2000
ARE CONNECTED IN SERIES
Printed in U.S.A.
MAINFRAME HARNESS 7105982
4 of 6
Dealer Copy -- Not for Resale
25A
1130
1110
1120
8210
8250
1110
1120
1130
8150
8110
4730
8510
8550
8000
6210
6320
4150
4100
4110
30A
8010
15A
6320
6310
8530
868787A
85 30
86 87 87A
25A
25A
1050
1055
1330
1360
2000
2010
2020
2030
2050
2060
8510
8500
8550
8530
868787A
1060
2030
2040
8210
8200
8530
868787A
1030
2060
6300
4150
4110
6210
6200
15A
8530
868787A
1320
2010
2020
8110
8150
8530
868787A
1350
2040
2050
8100
30A
8530
868787A
6000
FUSE 10
FUSE 11
FUSE 2
9700
9600
9500
9800
6000
1310
1080
1300
1060
1040
1030
8800
FUSE 3 FUSE 6
FUSE 5
FUSE 4
SEE CAB
CONNECTOR
C407
4200
1
4
0
0
25A
1150
1160
FUSE 9
1070
1040
2710
9800
9710
1730
9510
1160
9610
C
B
A
D
F
G
E
C426
A
C
D
&
R
E
M
O
T
E
S
T
A
R
T
C
O
N
N
E
C
T
O
R
2100
1170
F
A
D
1740
25A
P
K
N
J
S
M
L
4550
4275
4220
9620
9720
G
R
E
9520
H
B
C
2240
1050
1140
FUSE 1
25A
1080
FUSE / RELAY CENTER
FUSE 12
A
(
U
N
S
W
I
T
C
H
E
D
P
O
W
E
R
)
(ACS)
(HEATER
)
ATTACHMENT
)
(ALTERNATOR
& KITS)
120
(COMPUTER)
6410
6510
7
2
0
0
2200
4200
4100
D
E
G
F
9410
9400
1740
TRACTION
LOCK
FUEL
PULL
STARTER
GLOW
PLUG
REAR
LIGHT
MARKER
LIGHT
SWITCHED
POWER
T
O
O
P
T
I
O
N
S
(
A
T
T
A
C
H
M
E
N
T
C
O
N
T
R
O
L
)
RELAY GROUNDS
2000-2060
ARE CONNECTED IN SERIES
9110
9210
6510
6410
7200
5 of 6
Dealer Copy -- Not for Resale
2500
C
F
B
A
S
G
L
J4
R
A
H
K
J
J1
L
E
A
D
R
J
B
C
O
P
E
N
M
C
1190
D
1
5
0
0
B
G
H
N
J
F
G
K
A
P
H
R
S
J
K
D
H
EG
SJC HARNESS 6736028
7200
9620
J2
J3
4950
1180
2240
O
P
E
N
1740
9520
1170
13 ohm - 12V
OPEN
OPEN
O
P
E
N
P
K
L
F
M
N
O
P
E
N
OPEN
2
2
5
0
S
E
OPEN
O
P
E
N
1240
M
J
K
G
N
A
2180
4420P
E
7100
1230
OPEN
OPEN
S
D
H
R
C
B
OPEN
L
F
2170
OPEN
9010
4260
2680
DC
C451
DCBA
BA
2690
4250
4280
2660
DC
C452
DCBA
BA
2670
4270
OPE
N
OPE
N
2080
4530
1520
4540
123456
RED
LGN
WHT
BLK
C
4
4
9
123456
BRN
OPEN
3456271
C
4
5
9
3456271
LEFT
HANDLE
4510
2070
OPEN
9000
654321
BLK
BRN
LGN
C
4
5
0
654321
RED
WHT
1510
4520
726543 1
C
4
6
0
726543 1
RIGHT
HANDLE
9010
M
9000
6410
6510
9420
4420
4275
CA B
C497
1570
2620
TILT ACTUATOR
M
1
2
3
4
5
6
7
8
BLK
DGN
RED
RED
BLK
C428
1
2
3
4
5
6
7
8
1580
3060
2630
LIFT ACTUATOR
M
1
2
3
4
5
6
7
8
BLK
DGN
RED
RED
BLK
C429
1
2
3
4
5
6
7
8
3050
3000
3070
4 3 2 1
C
4
5
3
4 3 2 1
1530
2570
HALL
EFFECTS
SENSOR
3020
3080
4 3 2 1
C
4
5
4
4 3 2 1
1540
2580
HALL
EFFECTS
SENSOR
C D
B
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
2250
4275
A
B
C404
TO
OPTIONS
RIGHT
SIDE
WHEEL
SPEED
LEFT
SIDE
WHEEL
SPEED
TO OPTIONS
PN
OPEN
OPEN
OPEN
FE
OPEN
OPEN
L
E
F
T
D
R
I
V
E
F
O
R
W
A
R
D
L
E
F
T
D
R
I
V
E
R
E
V
E
R
S
E
R
I
G
H
T
D
R
I
V
E
F
O
R
W
A
R
D
R
I
G
H
T
D
R
I
V
E
R
E
V
E
R
S
E
2500
2070
2080
2570
2580
2620
2630
2240
2250
2260
1400
1170
F
A
D
1740
P
K
N
J
S
M
L
4550
4275
4220
9620
9720
G
R
E
9520
H
B
C
2240
C409
4920
4940
4930
4310
4320
4300
1
4
9
0
F
G
A
H
J
E
K
B
D
C
2530
4230
4820
4810
4840
4830
1480
A
D
C
B
G
F
K
E
H
J
4240
2520
C410
4640
C425
2200
4200
A
C
B
4100
9410
9400
J
1
P
T
I
O
N
S
C
H
M
E
N
T
T
R
O
L
)
4910
4910
V-0685 (2-10-05)
9110
9210
6510
6410
7200
NOT USED WITH
SJC OPTION
NOT USED WITH
SJC OPTION
C492
BRAKE
VALVE
SOLENOID
A
C
B
72A
70A
B
A
A
B
6 of 6
Dealer Copy -- Not for Resale