Peterbilt 379 Schematic
Schematic, Model 379 Family Wiring SK25762 01
RH SPEAKER
LH SPEAKER
RADIO
RH LOAD LT
LH LOAD LT
AD LIGHT
AUX FAN
RH SPOT LT
LH SPOT LT
ALARM TAP
RH DOOR LT
RH DOOR SW
CTR ROOF LT
LH DOOR SW
LH DOOR LT
RH CLR LGHT
RH I D LGHT
CTR I D LGHT
LH I D LGHT
LH CLR LGHT
C B
TURN
MARKER
RH
HIGH
LAMP
LOW
ASSY
HIGH
HIGH
HIGH
LH
LOW
LAMP
ASSY
MARKER
TURN
RH POLE LT
LH POLE LT
RH DR/FOG LT
LH DR/FOG LT
ELECTRIC HORN
FAN SOLENOID
FREON
220
HSFO SW
242
A495
FREON
180
HSHP SW
FREON
180
HSLP SW
570
ENGINE BRAKE OPTIONS
RADIATOR SHUTTER OPTION
NO
KYSOR WATER
C
TEMP OPTI ON
NC
WATER TEMP GUAGE
OPTION
ETHER
FUEL SOLENOID
ENGINE OIL TEMP
MAIN T RANS
TEMP OP TI O N
SPARE CIRCUITS
FREON COMPRESSOR CLUTCH
FAN CLUTCH TEMP SW
LOW WATER WARNING
OPTION
SOLENOID (W/O
239
STD STARTER)
29
A29
A30
ALTERNATO R
31
CIRCUIT
30
BREAKER
239
239
FRAME
GRD
ENGINE
GRD
-
432
436
434
430
430
434
436
432
437
433
431
435
A252
239
19
249
249
254
229
132
19
19
132
389
329
19
239
389
329
19
239
19
329
389
329
19
329
19
239
5
239
5
239
5
239
5
239
5
239
19
239
348
227
239
8
41
239
42
42
239
41
8
239
228
8
8
7
7
243
220
FIREWALL
HARNESS
225
224
223
289
191
285
231
232
380
83
A23
282
59
E1
E2
93
242
220
242
A98
239
239
29
A29
A30
A30
A29
298
MAIN CAB
POWER
S
STARTER
BLANK
A495
243
570
220
242
ENGINE
HARNESS
BLANK BLANK
A495 A495
B239
437 437
433
431
389
429
239
19
248
249
SLEEPER
JUMPER
HARNESS
B239
A495 A495
329
249
254
A252
229
132
429
239
19
248
5
348
ROOF
HARNESS
FIBER
OPTIC
LIGHT
ENGINE
BRAKE
OPTIO N
CRUISE
CONTROL
HOOD
HARNE SS
227
239 239
8
41
42
42
41
228
7
243
570
220
242
A495 A495
225
224
223
289
191
285
231
232
380
83
A23
282
59
E1
E2
93
242
220
A98
239
29
-+-+-
+
B239
433
431
435435
389
429
239
19
248
249
254254
B239
329
249
254
A252
229
132
429
239
19
248
5
348
MAIN CAB
HARNESS
239
253
225
224
223
289
242
BLANK
305
SPARE
98
106
419
192
285
SPARE
BAR
SPARE
242
SPARE
SPARE
16-WAY CONNECTOR
SPARE
302
228
BUZZER
227
TEST
TEST
SPARE
42
438
SPARE
145
239
220
249
354
132
LIGHT
18-WAY CONNECTOR
SPARE
SPARE
SPARE
SPARE
239
354
MAIN CAB
HARNESS
225
224
223
289
285
231
232
380
83
A23
282
59
E1
E2
93
242
220
A98
239
29
MAIN CAB
HARNESS
BATTERIES
437
RH SPEAKER
DRL
8
LIGHT
BULB
25 25
4
S #4
8
S #5
230
303
242
PNLLPSW
ACC
MIR
13
304
41
LEFT
CL LPS
42
5
A5
2828
HORN
MARKER LPS
B8
27
TURNCBC LP
A FN
ROOF
HORN
HEAT
ACC
570
226
SPARE
#3
239
RIGH T
A8
BUNK AC
FOG
A433
A433
433
431
A431
A431
435
429
429
429
239
239
19
A19
239
19
A19
239
19
A19
239
19
239
19
239
19
239
19
239
239
19
19
239
239
329
329
389
19
19
389
329
329
239
45
248
CAB
HTR
SLPR
342
4
93
342
A/C
SLPR
RADIO
93
269
8
37
239
RH LAMP
STOP/TAIL/ BACK
8
269
239
269
242
242
242
239
2
239
1
239
35
239
36
239
241
5
5
SPEAKER
VOL CONTROL
FUSE HOLDER
429
ACC POWER CONN
OVERHEA D
FLUORESCENT LT
LH GENERAL LTS
RH GENERAL LTS
ACC GROUND
READI NG LT
READING LT
RH BAG
COMP LG HT
RH DR SWTCH
LH DR SWTCH
LH BAG
COMP LGHT
226
226
397
HTR
SPARE
SW
WIPE R
SPARE
COMP CLTCH
570
28
TAIL
298
4
3
STOP
304
632
LIC PLATE LAMP
(OPTIONAL)
BACK-UP ALARM
(OPTIONAL)
BACK-UP LIG HT SW
FUEL FILT ER
AIR DRYER
FRONT DRIVER
TEMP SENDER
SPARE MARKER LT
LH SPEAKER
ACC POWER
OVERHEAD LT SW
DOME LIGHT
B239
226
SPARE
#1
#2
152A495
CAB FAN LO
FRSH/RECRC
632
248
B239
124
IGN
RT HD
LP
29824
25
LT HD
LP
298
24
RIGHT
FUEL TAN K
LEFT
FUEL TAN K
REAR DRIVER
TEMP SENDER
AUX TR ANS
TEMP SENDER
633
SCHEMATIC-
379 FAMILY
SK25762
A495
A495
B239
B239
437
437
433
433
431
431
435
PRESS
SW
WIPER
MOTOR
631
435
389
429
239
248
249
254
SLEEPER
JUMPER HARNESS
CAB HEAT
& A/C
CNTRL
AUX HEATA/C CNTRL
BLOWER
CONTROL
BLOWER
MOTOR
TEMP
ACTUATOR
BLOWER
RESISTOR
AD LT
RH LOAD LT
LH LOAD
LT
348
269
8
38
37
239
LH LAMP
STOP/TAIL/ BACK
SPARE RH TURN LT
MAIN CAB
HARNESS
228
227
241 241
281
389
429
239
1919
248
249
254
SLEEPER
HARNE SS
BLANK
B239
A495
630
629
628
B239
248
240
212
153
152
SLEEPER
153
248
628
629
630
152
153
212
240
239
42
41
A239
283
243
230
280
298
A252
298
252
230
230
39
229
227
228SPARE LH TURN LT
CHASSIS
HARNESS
228
227
3737
88
3838
242242
2
2
1
1
3535
3636
239239
5
5
254
249
249
239
329
A8
429
19
269
8
37
239
302
HEAT
RH MIRROR
TURN LGHT
227
239
239
MAIN CAB
HARNESS
228
302
239 GROUND
239
253
253
239
280
280
AUX
5
228
279
239
GROUND
TRAILER
CONSTANT POWER
SWITCHED POWER
23
29
83
A5
B8
253WHITE
13
AUX TRANS TEMP
VARASHIELD
CLOCK
GLOW PLUG
IGN
SW
AIR
APP
FUEL
RESTRICT
PYRO
ETHER
41
42
242
239
29
298
328
239
328
280
AUX
230
226
404
242
398249
402
239
397
397
403
404
241
35
36
59
242
239
253
280
83
226
12
286
23
252
253
242
239
14
380
239
242
280
282
253
242
239
286
29
83
226
239
253
242
CONSTANT POWER
SPARE
CIRCUTS
SWITCH
303
302
280
132
226
220
2
14
1
232
280
254
249
WIPER/
WASH SW
27
7
239
B8
239
239
298
24
239
B8
RED
TRANS
TEMP
AIR
PRESS
106
106
285285
DUAL
AIR
PRES
FUEL
LEVEL
VOLTS
START
MAN
BUTTON
PRESS
INSTR GRDS
INSTR POWER
41
42
242
239
29
298
328
239
328
MIRROR
SWITCH
HEAT
SPOT
SWITCH
LIGHT
SWITCH
ENG FAN
FUEL
SWITCH
LEVEL
SWITCH
29
SWITCH
SWITCH
SWITCH
ENG CHECK LIGHT419
438 E NG STOP LIGHT
PANEL
LIGHT
DIMMER
SPARE
SPARE
SPARE
90
SPARES
197
239
324
239
INSTR LIGHT POWER
DRL
MODULE
PARK BRAKE SW
SWITCH
ETHER
REAR
DRIVER
TEMP
FRONT
DRIVER
TEMP
WATER
TEMP
OIL
TEMP
OIL
PRESS
TACH
SENSOR
SHUTDOWN OVERRIDE
AD/LOAD
LIGHT
AIR START
AUX
LIGHT
CLEA RANCE
LIGH T
HEADLIGHT
TWO SPD
AXLE OPT
SPEEDO
SPEEDO
SENSOR
227
SPARES
8
41
42
TACH
42
41
228
7
243
570
220
242
DAYTI ME
RUNNING
LIGHT
OPTIO N
5
CLR LGHT
GROUND
GROUND
CLR LGHT
5
TURN LGHT
HEAT
280
AUX
5
228
279
2278227
8
66
TRAILER HARNESS
OPTIO NS
LH MIRROR
OPTIO NS
GLOVE BOX LT
CIG L IGHTE R
LT
FUSE HOLDER
CIGAR
LIGHT ER
AUX
5
228
279
227
8
66
152
CAB
153
BLOWER
212
RESISTOR
240
153
BLOWER
45
404
239
239
403
402
398
397
283
281
A39
228
227
38
37
A8
8
281
279
3
192
242
145
239
305
305
239
106
231
23
239
634
342
239
629
342
632
633
A39
39
239
239
239
286
304
298
A298
CIRCUIT
BREAKER
E1
E2
230
230
226
226
226
239
232
A98
98
29
A23
23
66
5
8
AUX
228
227
279
TRAILER
PLUG
CAB
HORN BUTTON
STOP
LT
5TH WHL
DIFF LOCK
LOW AIR
LOW AIR
OIL
KYSOR OPTIONS
MODE ACTUATOR
TEMP ACT UATOR
FRESH/RECIRC
ACTUATOR
FLASH ER
GROUND
SHUTDOWN RELAY GRD
MAIN
ACC RELAY
#5
#4
SPARE CIRCUTS
#3
#2
#1
ENGINE SHUTDOWN/
SPEED LIMITER/
ENGINE WARNING
OPTIONS
239
A239
A495
631
240
212
152
153
239
A495
631
634
342
253
239
629
239
633
342
WASHER
TURN SIGNAL
SW
PM719132.FRM
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