Lull 944E-42 Service Manual - Manual (Page 573)

9.63 Model 644E-42/944E-42 Rev. 6/04
Electrical System
9.8.20 Optional Closed Cab Electrical Schematic
Schematic is drawn with the ignition switch in the OFF position.
ENGINE
BLOCK +
-
BATTERY
1
B
C
RWP
TWP
CNDP
AC
SWITCH
1 3
2
FRONT
WASHER
PUMP
MOTOR
POWER
GND
M
SKYLIGHT
& REAR
WASHER
PUMP
MOTOR
POWER
GND
M
COMPRESSOR
CLUTCH
BLP
190
FWP
205
CAB
GRND
STUD
WPG
FWG3
FWG1
FWG2
TWG1
210
GJ1
RWG
FWG4
GJ1
FW3
FW2
FWJ2
FWJ1
FW1
FW2 FW3 FW4
FWG1
FWJ3
FW1A
FW5
TW1
TWG1
TWJ
TWP
TW2 TW3 TW4
ACG1
AC2
BLC
BLM
BLH
BLL
AC2A BLM
BLH BLL EVG AC1
HVG
HV8
TWG2
TW2
HIGH/LOW
PRESSURE
SWITCH
LOW - (28 PSI)
HIGH - (455 PSI)
RWG
RWP
FWG4
FW5
TWG3
TW4 REAR
WIPER
SWITCH/
MOTOR
A
C
GND
M
PARK
RUN
POTG
ACG1
ACG
CNDP
CNDG
CNDS
EVG
CAB
GRND
STUD
CNDG
POTP
HVP
195
AC2A
AC2
CNDS
200
FWG2
FW4
FW1
FW1A
145
POTG
BLC
FRONT
WIPER
SWITCH
2 1
9 6 4 3 1
7 5 2
2 5 7
9 6 3 4 1
P
L
GND
M
H
FRONT
WIPER
MOTOR
P
L
H
FRONT
WASHER
SWITCH
2
3
1
7
8
7 3
2 8
8 2
6
SKYLIGHT
WIPER/
WASHER
SWITCH
2
1 3
2
5
1
7
8
555555555
6 3 1 7
THERMOSTAT
(35°F)
F
E
HEATER/AC
BLOWER
MOTOR
POWER
GND
M
BLOWER
MOTOR
RESISTOR
PACK
BLOWER
B F
C A D E
HEATER VALVE
POWER GROUND
7
8
10
D
C
A
VALVE
POTENTIOMETER
SKYLIGHT
WIPER
MOTOR
A
C
GND
M
PARK
RUN
B A
C
POWER
GND
M
AC CONDENSER
87A 87
30
86
85
POWER
GND
M
TW3
TWG3
BLB
CAB
POWER
RELAY
87A 87
30
86
85
CP2
CP3
FJ12
16
FJ13
17
FJ14
18
19
F16 10
FRONT WIPER
(OPTION)
P
F17 25
HEATER FAN
(OPTION)
Q
F18 7.5
SKYLIGHT WIPER
(OPTION)
R
F19 7.5
REAR WIPER
(OPTION)
S
F25 40
LIGHTS MAIN
(OPTION)
Y
F26 25
CONDENSER FAN
(OPTION)
Z
FJ21
28
FJ21
FJ20
26
FJ19
25
AA 27
AB 28
CP3
F27
OPEN
F28
OPEN
15 F15 40
CLOSED CAB
MAIN (OPTION)
O
12V BUSS BAR
STARTER
GND (-)
+
C
A
B A
B
C BA1
POWER
MALE
CONNECTOR
F1 40
OPEN CAB
VEHICLE MAIN
F2 15
IGNITION
CONTROL
BA1A
B
2
PB1
BA3
BB1
BC1
BC1A
BB1A
ACC IGN
B+
OFF
ACC
IGN ST
IGNITION
SWITCH
H
L M
B C
B
H
C
O
L M
BLOWER
SWITCH
A POTP
INTERNAL
GROUND
TO ENGINE
POWER
FEMALE
CONNECTOR
CMP1A
IGNITION
RELAY
87A 87
30
86
85
IG1
BA4
BA3
10
PB2A
PB2
To
Transmission
Fuse (F3)
To
Park Brake
Switch
CP1
CP1
B
A
MU0912
Refer to
pages 9.52,
9.53 or 9.54.
Refer to
pages 9.48,
9.49, 9.50
or 9.51.
= See Pages 9.48, 9.49, 9.50 or 9.51.