24 - Electrical System 42Service Manual – SC900
Harness Diagram
Drawing: 56115277 Rev E
CONFIDENTIAL
THIS DRAWING AND THE DESIGN REPRESENTED HERON IS THE PROPERTY OF NILFISK INC.,
BROOKLYN PARK, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO-
DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT
AGREES TO RETURN IT UPON REQUEST.
56115276N/A
DIM. IN [ ] ARE MM.
UNITS IN [ ] ARE ISO METRIC
AS NOTED.
SIZE
CREO DATA
APPROVED
NOTES UNLESS OTHERWISE
SPECIFIED
1.ALL DIMENSIONS IN INCHES.
2.DO NOT SCALE DRAWING.
3.ALL DIMENSIONS APPLY AFTER
PLATING AND HEAT TREATING,
BUT BEFORE PAINTING.
4.REMOVE ALL BURRS AND SHARP
EDGES.
APPROVED
APPROVED
PROJ ENG
CHECKED
DRAWN
MATERIAL: SEE CREO BOM
FINISH/COLOR:NONE
REVISIONS
APPDDFTMDATEECOREV
SHEET
DWG NO
REV
DWG NO
TITLE
SHEET
ASSY
SCALE
FUO
E
-NOTES-
NILFISK, INC.
BROOKLYN PARK, MN
SPRINGDALE, AR 72764
-
+
1
2
1
2
1
2
1
2
1
2
1
2
1
3
GND
~
B+ B-
1
2
43
1
2
43
M
CONN
M
CONN
- +
M
CONN
- +
M
CONN
- +
1 0
6 8
2 4
1
2 ENABLE
3 FET DRAIN
4 B-
5
6 HM2
7 HM 1
8 B+
1 B+
2 SOL IN
3 SOL OUT
4 DET OUT
5 B-
20A
14A
15A
WIPER
P LOW
P HI
56115326
56115278
56115357
56115356
56115358
1 0
6 8
2 4
HARNESS-SC900 W/READER
HARNESS-SC900 W/O READER
56384170
56384169
56115381
JUMPER-MOLEX CONNECTOR
1. REFERENCE LADDER DIAGRAM 56115276
8-10-15
1
4
PROGRAMMER
2
3
B-
B-
POT HIGH
POT WIPER
KSI
BRAKE-
PUSH
MODE(M1, M2)
STATUS
B+
B+
INHIBIT
POT LOW
BRAKE+
BDI
HORN
REVERSE
SPEED LIMIT POT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
B-
B+
M1
M2
AAO
WCR
12-25-16
A-11876
E
ADD: SPL-20, SPL-21, SPL-22, W138
E
E
E
E
E
E
DEL: X14, X16, X66, X74, SPL-11,
MOD: X13, X62, X65, SPL-9,
E
E
E
E
E
E
W139, W140, W141, W142, W143
W027, W051, W068, W069
SPL-19, W030, W040, W042, W045,
W049, W051, W053, W058, W059,
W063, W073, W075, W083, W085
E
E
E
E
E
E
E
E
E
E
E
E E
E E
E
E
E
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
E E
F F
G G
H H
1 OF 1
E
TAG
WCR
8-10-15
SC900
DIAGRAM-WIRING
56115277
56115277
1
BT1
36 VDC
F1
CB1
SPEED CONTROLLER
30A
CB2
BRUSH MOTOR LEFT
25A
CB3
BRUSH MOTOR RIGHT
25A
CB4
VACUUM MOTOR
20A
CB5
KEY SWITCH
2.5A
SW1
KEY
L1
DETERGENT PUMP
GO MIDDLE
SW2
S REV
SW3
BRUSH
SW4
DELTA Q
E1
BRUSH CONTACTOR
K2
VACUUM CONTACTOR
K3
M4
VACUUM MOTOR
M3
BRUSH MOTOR RIGHT
M2
BRUSH MOTOR LEFT
M1
DRIVE MOTOR
LCV RELAY
K1
VACUUM
SW5
X1
X2
X3
X4
X5
X6
X7
X8
X9
X10
X11
GRN,18,W001
X12
X13
X15
X17
X18X25
X28
X29
X30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
X31
1
2
X32
1
2
X33
1
2
X34
1
2
X35
-
+
X36
-
+
X37
X38 X40
X43
BLK,4,W004
RED,4,W005
X44
1
2
3
4
5
6
7
8
P2
BATTERY GUAGE & HOURMETER
P3
DETERGENT MODULE
X47
1
2
3
4
5
6
7
8
9
10
11
12
X48
1
2
3
4
5
6
7
8
9
10
11
12
SPL-1
VIO,18,W006
SPL-2
SPL-3
VIO,18,W011
VIO,18,W011
PNK,18,W012
PNK,18,W012
PNK,18,W013
PNK,18,W013
GRY-VIO,18,W018
GRY-VIO,18,W018
WHT,18,W019
WHT,18,W019
ORN,18,W020
ORN,18,W020
SPL-5
PNK-BLU,18,W022
PNK-BLU,18,W023
PNK-BLU,18,W023
PNK-BLU,18,W024
PNK-BLU,18,W024
X49
BRN-VIO,18,W026
BRN-VIO,18,W026
SPL-6
BRN,18,W028
BRN,18,W029
BLK,18,W030
BLK,18,W030
SPL-7
VIO-WHT,18,W031
VIO-WHT,18,W032
VIO-WHT,18,W032
VIO-WHT,18,W033
VIO-WHT,18,W033
VIO-WHT,18,W034
VIO-WHT,18,W034
SPL-8
GRY,18,W035GRY,18,W036
GRY,18,W036
GRY,18,W037
GRY,18,W037
BLK,4,W038
BLK,4,W038
RED,4,W039
RED,4,W039
RED,18,W040
RED,18,W040
RED,10,W041
RED,10,W041
RED,16,W042
RED,16,W042
PNK-WHT,18,W044
PNK-WHT,18,W044
X55
X56
X57
X58
X59
X60
BRN,18,W045
BRN-VIO,18,W046
SPL-9
VIO,18,W047 VIO,18,W048
PNK,18,W049
PNK-WHT,18,W050
VIO-WHT,18,W052
BLK,18,W053
BLK,18,W053 BLK,18,W054
GRY-VIO,18,W056
BLU,18,W057
YEL,18,W058
YEL,18,W058
BLU,18,W059
BLU,18,W059
VIO-WHT,18,W060
VIO-WHT,18,W060
VIO-GRN,18,W061
VIO-GRN,18,W061
VIO-RED,18,W062
VIO-RED,18,W062
X62
BLK,18,W063
BLK,18,W063
X63
SPL-10
WHT-RED,10,W064 WHT-RED,12,W065
WHT-RED,12,W065
WHT-RED,12,W066
WHT-RED,12,W066
X64
GRA-RED,12,W067
GRA-RED,12,W067
BRN,18,W069
BRN,18,W069
RED-GRN,12,W070
RED-GRN,12,W070
RED-BRN,12,W071
RED-BRN,12,W071
X65
BLK,12,W072
BLK,12,W072
BLK,12,W073
BLK,12,W073
ORN-VIO,12,W074
ORN-VIO,12,W074
BLK,12,W075
BLK,12,W075
X68
X69
X70
X71
X72
X73
SPL-12
SPL-13
RED-GRN,12,W076
RED-GRN,10,W077
RED-GRN,10,W077
RED-GRN,10,W078
RED-GRN,10,W078
BLU-YEL,12,W079 YEL-BLK,10,W080
YEL-BLK,10,W080
YEL-BLK,10,W081
YEL-BLK,10,W081
RED,10,W082
RED,10,W082
BLK,10,W083
BLK,10,W083
RED-YEL,18,W084
RED-YEL,18,W084
BLK,18,W085
BLK,18,W085
X76
X77
X78
ORN,18,W086
YEL,18,W088
X79
X80
X81
X82
RED,4,W089
X83
1
2
SOL SEL
L2
GO LEFT
SW6
GO RIGHT
SW7
X84
1
2
X85
1
2
VIO,18,W090
VIO,18,W090
VIO,18,W091
VIO,18,W091
VIO,18,W093
VIO,18,W093
VIO,18,W094
590W,81,OIV
VIO,18,W096
VIO,18,W096
X86
BLU,18,W097
BLU,18,W098
BLU,18,W099
SPL-14
YEL,18,W101
YEL,18,W102
X87
1
2
3
4
5
6
DECK GND CHASSIS GND
TRANSAXLE GND
X89X90
GRN-YEL,16,W104
GRN-YEL,16,W104
GRN-YEL,16,W105
GRN-YEL,16,W105
X91
X46
1
2
3
4
5
6
7
8
POTENTIOMETER
R1
2
1
3
LCV RELAY
K4
X92
1
2
3
4
5
6
7
8
X93
1
2
3
4
5
6
7
8
9
10
11
12
BLK,16,W106
GRY,18,W109
WHT,18,W110
PNK,18,W111
BRN,18,W112
BLU,18,W113
X94
1
2
3
4
5
6
7
8
X95
1
2
3
4
5
6
7
8
9
10
11
12
RED,20,WIRE 3
GRY,20,WIRE 11
PNK,20,WIRE 12
BRN,20,WIRE 2
BLU,20,WIRE 4
ORN,16,W122
BRN,16,W123
RED,18,W124
INLINE FIUE
1 2
1 2
SPL-18
X96
X97
X98
X99
WHT,20,WIRE 1
YEL,20,WIRE9
X101
1
2
X102
X103
RED,12,W131
BLK,12,W132
X44A
1
2
3
4
5
6
7
8
BLK,18,W133
X87A
1
2
3
4
5
6
BLK,18,W134
P1
CURTIS 1228
BLU,18,W114
WHT,18,W087
YEL,18,W103
SPL-19
PNK,18,W137
PNK,18,W092
PNK,18,W092
PNK,18,W138
PNK,18,W138
SPL-20
BRN,18,W139
BRN,18,W140
PNK,18,W141
PNK,18,W141
SPL-21
BLK,18,W142
BLK,18,W142
SPL-22
BLK,18,W143
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