Peterbilt 335 Schematic
CAT 3126E SK28520 B 01
ROAD
SPEED
SIGNAL
ALLISON MD/HD
WORLD TRANSMISSION
ROAD
SPEED
SENSOR
MANUAL
XMSN ONLY
CLUTCH
SWITCH
(MANUAL
XMSN ONLY)
87A
30
87
85
86
ALLISON HD/MD
AUTO XMSN
RANGE IND
RELAY
A/C COMPRESSOR
SOLENOID
EXHAUST
BRAKE
SOLENOID
(OPTIONAL)
INLET
AIR HEATER
RELAY
87A
30
87
85
86
WATER TEMP
SENSOR
XMSN
TEMP
WT157, TAN
OR
LOW
COOLANT
PROBE
AUTO XMSN
583, LT_GRN
584-1 , G RN/WHT
OR
242-4 , RED
MANUAL XMSN
AIR HEATER
RELAY FUSE
(10 AMP)
ENGINE SPARE E1
WATER TEMP
LIGHT
SHUTDOWN
J46-2
A
P46
B
A
B
J46-1
A
B
J22-2
C
B
A
J22-1
C
B
A
J1587
DATA
LINK
FOR OPTIONAL
L/N 4860
200A ALT
D
D
C
C
B
B
A
A
J55
P55
J53
P53
A
A
B
B
P22
C
B
A
P42
J42
B
B
A
A
J63
P63
B
B
A
A
J54
P54
B
B
A
A
J71
1
P59
J59
B
B
A
A
J61
P61
B
B
AA
J52
1
J67
P67
1
1
P12
J12
1
1
P68
J68
1
1
T69.
T69
1
1
T70.
T70
1
1
P5A
J5
1
1
ENGINE ECM
CONNECTOR
197, BLU/RED
239-4 , BLK
569, LT-GRN/PINK
567, RED/GRN
457-4 , BLK
568, LT-GRN/BLU
457-5 , BLK
465, GRN
242-3 , RED
584, GRN/WHT
418-2 , WHT
417-2 , PRP
93, LT_GRN/WHT
239-2 , BLK
239-5 , BLK
289, LT-BLU/GRN
242-5 , RED
242-2 , RED
639, LT-GRN
83, ORN/WHT
639, LT-GRN
E1, WHT
380, PRP/YEL
239-1 , BLK
285, GRN/BRN
231, GRN
232, GRN
59, VIO
+ 8 VDC
SENSOR COMMON
J1587 DATA LINK POSITIVE
J1587 DATA LINK NEGATIVE
+5 VDC
125745678910111213141516
P41
567, RED/GRN
457-2 , BLK
417-3 , PRP
418-3 , WHT
582, RED/ORN
S1
S22
S3
S4
S10
197-2 , BLU/RED
582, RED/ORN
667, WHT
462, YEL
458, BLU
668, LT-GRN
466, WHT/RED
P1.
COOLANT LEVEL LOW
ENGINE FAN SOLENOID
658, WHT/LT-GRN
419, LT-GRN
EXHAUST BRAKE
466, WHT/RED
461, BLU
457-1 , BLK
CLUTCH SWITCH
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 69 35 36 37 38 39 40 41 68 43 44 45 46 47 48 49 70 51 52 53 54 55 56 3 58 59 60 61 62 63 64 65 66 67 42 34 50
465, GRN
973, GRN
974, PRP
522-1 , WHT/LT-GRN
463, PINK
544, GRN/WHT
464, WHT
522-2 , WHT/LT-GRN
VEHICLE SPEED INPUT (+)
SET SWITCH
VEHICLE SPEED OUTPUT (+)
FAST IDLE LAMP
668, LT-GRN
239-4 , BLK
462, YEL
197-1 , BLU/RED
418-1 , WHT
417-1 , PRP
17345628910111213141516171819202122232425262728293031
VEHICLE SPEED OUTPUT (-)
974, PRP
973, GRN
SEE SHEET 2 FOR
CAB HARNESS
STOP ENGINE LAMP
438, BRN/WHT
419, LT-GRN
438, BRN/WHT
476, GRN/RED
A23-1 , ORN/GRN
FAST IDLE ENABLE
ENG FAN OVERRIDE
476, GRN/RED
522-2 , WHT/LT-GRN
ENGINE/FIREWALL
WIRING
SERVICE BRAKE #1
RESUME SWITCH
464, WHT
463, PINK
VEHICLE SPEED INPUT (-)
CHECK ENGINE LAMP
COOLANT LEVEL NORMAL
569, LT-GRN/PINK
PTO ENABLE
SENSOR COMMON
UNSWITCHED +BATTERY POWER
UNSWITCHED +BATTERY POWER
IGNITION KEY SWITCH
A457, WHT
455-5 , RED
A23-1 , ORN/GRN
568, LT-GRN/BLU
544, GRN/WHT
455-4 , RED
S6
59, VIO
P38
J1939 DATA LINK
REMOTE PTO "RESUME"
CRUISE CONTROL ON/OFF SWITCH
NEUTRAL INDICATION
REMOTE PTO "SET"
461, BLU
A463, WHT
584, GRN/WHT
A462, WHT
E1, WHT
93, LT_GRN/WHT
6E7A7B7C7E7F7G8F8G
HIGH
LOW
SHIELD
SERVICE BRAKE #2
(-) BATTERY POWER
(-) BATTERY POWER
ACCELERATOR PEDAL POSITION
REMOTE PTO
SWITCH EOF
(OPTIONAL)
-
(-)
(+)
BATTERY
ECM FUSE
(20 AMP)
-
SET
RESUME
+
S
STARTER
239, WHT
J72
12, RED
12, RED
455-2 , RED
A30, BLK/ORN
31, RED
615, TAN/GRN
A29, PRP
239-7 , BLK
239-7 , BLK
WHT
P72
P35
P71
J34 P34.
P51
J43A
J43B
J43C
J45
J44
J62
A
A
B
B
C
C
J35
1
1
J1939
A
DATA
B
LINK
C
(OPTIONAL)
1
1
J51
B
B
A
A
P43A
1
1
P43B
1
1
P43C
1
1
P45
1
1
P44-1
1
1
P62
1
1
STARTER
(POS)
STARTER
(SOL)
STARTER
(NEG)
661, YEL
662, GRN
660, WHT
577-4 , BLK
667, WHT
577-3 , BLA
458, BLU
S7
ENGINE BLOCK
GROUND STUD
239-9 , B LK
S9
A463, WHT
A462, WHT
A457, WHT
577-1 , BLK
661, YEL
662, GRN
660, WHT
ALTERNATOR
J66
P66
11
31, RED
T64-1
T64
1
615, TAN/GRN
616, BLK/ORN
616, BLK/ORN
658, WHT/LT-GRN
A30, BLK/ORN
380, PRP/Y EL
231, GRN
232, GRN
239-1 , BLK
242-1 , RED
285, GRN/BRN
289, LT-BLU/GRN
29, PRP
83, ORN/WHT
4A4B4C4D4E4F4G5A5B5C5D5E5F5G6C6D
1
T65
T65-1
1
1
T60-1
T60
1
1
J19
P19
B
B
A
A
239-8 , B LK BLK
J56
P56
B
B
A29, PRP
A
A
P57
J57
A
A
239-6 , BLK
B
B
29, PRP
RED
A30-1 , WHT
A29-1 , WHT
239-11 , WHT
29-1 , WHT
AIR
HEATER
CB
(135 AMP)
INLET AIR
HEATER RELAY
87A
30
87
85
86
522-1 , WHT/LT-GRN
+
HEATER
ELEMENT
457-8 , BLK
HSFO
A/C PRESSURE
SWITCH
J60
AIR
P60
S15
AB
BA
B239, WHT
J14
1
2
A30-1 , WHT
A29-1 , WHT
1
2
P14-3
1
2
P14-2
1
2
P14-1
A495, WHT
570, WHT
243, WHT
243, WHT
239-10 , WHT
A495, WHT
180, WHT
180, WHT
570, WHT
B239, WHT
29-1 , WHT
ENGINE FAN
SOLENOID
T7
1
T6
1
T9
1
T8
1
OR
OR
87A
30
87
85
86
P9
1
4
6
2
HOOD HARNESS
5
3
P15
J15
BB
A
A
HSHP PURPLE
P16
J16
B
B
A
A
PRESSURE SWITCH
J18
P18
BB
A
A
T7-1
1
T6-1
1
T9-1
1
T8-1
1
OVERCRANK
PROTECTION
MANUAL
XMSN
NEUTRAL
START
SWITCH
MD/HD AUTO
XMSN NEUTRAL
START RELAY
OPENS AT
350 PSIPRESSURE SWITCH
OPENS AT
ATMOSPERIC
PRESSURE
STARTER
MAG SWITCH
87A
30
87
85
86
CITY HORN
SK28520.FM
CAT 3126E SK28520 B 02
8G
CAB HARNESS
+12VDC
FAST
IDLE
LAMP
REMOTE
PTO
LAMP
A
#1 SERVICE BRAKE
NC PRESSURE
SWITCH
SEE DETAIL "A"
#2 SERVICE BRAKE
NO PRESSURE
SWITCH
WHT
RETURN
BLK
THROTTLE
SENSOR
+12VDC
S14_c0
SIGNAL
RED
POWER
CHECK
ENGINE
LAMP
A
R
STOP
ENGINE
(FOR INSTALLATIONS WITHOUT AIR
CONDITIONING AND MANUAL OVER RIDE
LAMP
SEE DETAIL "A"
SWITCH)
G
CRUISE
LAMP
522-11 , WHT
31J130 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 2 6 5 4 3 7 1
BULKHEAD
CONNECTOR
(ROUND)
(FUTURE USE)
466-1 , WHT
582-1 , WHT
462-1 , WHT
458-1 , WHT
P73
J73
1
A
1
668-1 , WHT
T4-111T4
542, LT_GRN
T3-1
T3
1
1
464-1 , WHT
T2-1
T2
1
1
457-14 , WHT
T1-2
T1
1
1
667-1 , WHT
J8.
P8
1
1
242-13 , RED
J7-1
P7
B
B
457-17 , WHT
C
C
458-1 , WHT
A
A
582-1 , WHT
J13
P13
2
2
419-1 , WHT
1
1
438-1 , WHT
J11
P11
11
354, RED/BLU
FAN
INTERLOCK
P8.
J8
1
1
522, WHT
419-1 , WHT
667-1 , WH T
668-1 , WH T
(FUTURE USE)
522-11 , WHT
463-1 , WHT
544-1 , WHT
522, WHT
457, WHT
461-1 , WHT
464-1 , WHT
CAB FEEDTHROUGH
A23, WHT
417, PRP
418, WHT
438-1 , WHT
476-1 , WHT
544-1 , WHT
CAB WIRING
IGNITION
SWITCH
PTO
INTERLOCK
P4.
P4
J4. 1
1
1
J4
A23, WHT
1
BULKHEAD
CONNECTOR
(RECTANGULAR)
8F 7G7F 7E 7C7B 7A 6E 6D6C 5G5F 5E 5D 5C5B 5A 4G4F 4E 4D4C 4B 4A
J38
59-1 , VIO
P30
1
1
J30
239-20 , BLK
93-1 , LT_GRN/WHT
380-1 , PRP/Y EL
E1-1 , WHT
231-1 , GRN
242-20 , RED
285-1 , GRN/B RN
289-1 , LT_BL U/GRN
83-1 , ORN/WHT
232-1 , GRN
29-11 , PRP
JB
PB
1
285-1 , GRN/B RN
1
S18
R
"WATER
TEMP
LAMP"
231-1 , GRN
29-10 , PRP
83-1 , ORN/WHT
380-1 , PRP/Y EL
59-1 , VIO
242-20 , RED
239-20 , BLK
E1-1, WHT
93-1 , LT_GRN/WHT
+12VDC
P34
P23
P26
6
5
4
PRESSURE
3
SWITCHES
2
1
J23
1
1
2
2
3
3
4
4
5
5
6
6
J26
1
1
2
2
3
3
4
4
SPEEDOMETER
HARNESS
20A
P33
1
1P39
WATER
TEMP
GAUGE
XMSN
TEMP
GAUGE
CAB
GROUND
ENGINE
SPARE "E1"
COMPRESSOR
CLUTCH
A/C
START
SWITCH
INLET AIR
HEATER
+12VDC
SWITCHED
POWER
LAMP
286
286, .
+12VDC
A
220, WHT
242, RED
1
J10
SWITCHED
+12 VDC
522-10 , WHT/LT_GRN
242-14 , RED
ENGINE FAN
SWITCH
JA
PA
1
1
220-1 , WHT
"ENGINE
FAN
LAMP"
G
CRUISE
SET/RESUME
SWITCH
SET
RESUME
P7.
654321
S12
S11
EXHAUST
BRAKE ON/OFF
DASH
J1587
DATA
LINK
417-10 , WHT
418-10 , WHT
BA
P1
1J22345
SWITCH
J41
1
1
J41.
P44
J44.
1
1
WT119
MD/HD WORLD XMSN
ENGINE BRAKE ENABLE
CIRCUIT
289-11 , LT-BLU/GRN
ENGINE BRAKE RELAY
87A
30
87
85
86
ALLISON MD/HD
WORLD XMSN
417-11 , PRP
418-11 , WHT
242-11 , RED
457-11 , WHT
ABCDEF
REMOTE PTO
SWITCH (OPTIONAL)
P3
54321
544-2 , GRN/WHT
542, LT_GRN
457-16 , BLK
242-12 , GRN/WHT
544-2 , GRN/WHT
1J32345
SWITCH (OPTIONAL)
P2.
FAST IDLE
457-15 , BLK
476-1 , WHT
54321
S13
S14
463-1 , WHT
457-13 , WHT
462-1 , WHT
1J723456
242-10 , RED
354, RED/BLU
461-1 , WHT
CRUISE ON/OFF
SWITCH
457-12 , BLK
P6 45231
1J6 3254
P5
DIAGNOSTIC
CONNECTOR
S19
29-13 , PRP
232-3 , GRN
P29
SHUTDOWN
OVERIDE
P21
J21
S21
1
1
232-2 , GRN
P37
654321
654321
SHUTDOWN
289-1 , LT_BLU/GRN
ABS
RELAY
87A
30
1
.
1
A
,
87
85
86
B11, .
HARNESSWT119, .
J22
P22.
11
ABS
522-13 , WHT/LT_GRN
ENGINE FAN
SWITCH
(FOR INSTALLATIONS WITHOUT AI R CONDITIONING
FAN
INTERLOCK
J17
P17
11
DETAIL "A"
AND MANUAL OVERRIDE SWITCH)
522-12 , WHT
457-3
(JUMPER)
J9
BULKHEAD
CONNECTOR
11
(ROUND)
#1 SERVICE BRAKE
N.C. PRESSURE
SWITCH
1T3-2
1T2-2
289A-1 , LT-BLU/GRN
SK28520.FM
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