Harness Routing Views. Cadillac STS 2005

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2005 🢒 STS 🢒 Body 🢒 Wiring Systems 🢒 Harness Routing Views

Figure 1:

Forward Lamp Harness


(1)	Headlamp Leveling Actuator - Left Connector
(2)	SP100
(3)	Hood Ajar Switch Connector
(4)	Cruise Control Module Connector
(5)	Ambient Air Temperature Sensor Connector
(6)	Air Quality Sensor Connector
(7)	Headlamp Level Controller
(8)	Fuse Block - Underhood C1
(9)	C112
(10)	C108
(11)	C111 (w/ K59, TT6)
(12)	S116
(13)	C113 (LH2)
(14)	G110
(15)	G104
(16)	Cooling Fan - Right Connector
(17)	S110
(18)	S111
(19)	Cooling Fan - Left Connector
(20)	Horn Assembly Connector
(21)	C107
(22)	Headlamp Assembly - Left Connector

Figure 2:

Forward Lamp Harness Routing (w/o T72/T84)


(1)	C122
(2)	C120
(3)	Headlamp Assembly-LH
(4)	Front Fascia
(5)	Headlamp Assembly-RH
(6)	C123
(7)	C121

Figure 3:

Valley Jumper Harness (LH2)


(1)	C104
(2)	Starter
(3)	Knock Sensor (KS) Bank 1 Connector
(4)	Camshaft Position (CMP) Actuator Solenoid Intake Bank 1 Connector
(5)	Camshaft Position (CMP) Actuator Solenoid Exhaust Bank 1 Connector
(6)	Camshaft Position (CMP) Actuator Solenoid Exhaust Bank 2 Connector
(7)	Camshaft Position (CMP) Actuator Solenoid Intake Bank 2 Connector
(8)	Knock Sensor (KS) Bank 2 Connector

Figure 4:

Left Side of Engine (LY7)


(1)	C115
(2)	S120
(3)	S137
(4)	S128
(5)	A129
(6)	G112
(7)	Coolant Temperature Sensor
(8)	Oil Level Switch
(9)	Front Cover
(10)	Engine Control Module (ECM) C1

Figure 5:

Right Side of the Engine (LY7)


(1)	C115
(2)	C106
(3)	G113
(4)	S124
(5)	S148
(6)	S150
(7)	S121
(8)	G103
(9)	S138
(10)	S126
(11)	S125
(12)	G109
(13)	S101

Figure 6:

Left Side of the Engine (LH2)


(1)	Fuse Block - Underhood C5 Connector
(2)	C140
(3)	C102
(4)	S115
(5)	C139
(6)	C105
(7)	C175
(8)	S104
(9)	Engine Oil Pressure (EOP) Sensor Connector
(10)	Wheel Speed Sensor - LF Connector
(11)	Engine Control Module (ECM) - C1 Connector
(12)	Engine Control Module (ECM) - C2 Connector
(13)	Engine Control Module (ECM) - C3 Connector
(14)	S105
(15)	A/C Compressor Clutch Connector
(16)	Mass Air Flow (MAF) Sensor Connector
(17)	Transmission Control Module (TCM) Connector

Figure 7:

Right Side of the Engine (LH2)


(1)	C102
(2)	S103
(3)	C139
(4)	Evaporative Emissions (EVAP) Canister Purge Solenoid Connector
(5)	C140
(6)	S100
(7)	Transmission Control Module (TCM) Connector
(8)	Fuse Block - Underhood C5
(9)	Brake Fluid Pressure Sensor Connector
(10)	S118
(11)	S117
(12)	Electronic Brake Control Module (EBCM) Conector
(13)	C113
(14)	C100
(15)	C101
(16)	G107
(17)	G100
(18)	C104
(19)	S113
(20)	S147

Figure 8:

C126 and C127


(1)	Headlamp Assembly-Right
(2)	C127
(3)	C126
(4)	Headlamp Assembly-Left

Figure 9:

I/P Harness - Front


(1)	Current Sensor Connector
(2)	Washer Nozzle - Right (Export) Connector
(3)	S219
(4)	C102 (LH2)
(5)	Washer Nozzle - Left (Export) Connector
(6)	Low Coolant Switch Connector
(7)	G101
(8)	Headlamp Washer Relay Connector
(9)	C112
(10)	Fuse Block - Underhood C4

Figure 10:

C219


(1)	Windshield
(2)	Windshield Wiper/Washer Module
(3)	Heated Washer Nozzle -- Left (XA7/LC3)
(4)	Heated Washer Nozzle -- Right (XA7/LC3)
(5)	C219 (XA7/LC3)

Figure 11:

Left/Right Side of I/P


(1)	I/P Trim-RH Side
(2)	C217
(3)	C200
(4)	C205
(5)	C218
(6)	I/P Trim-LH Side

Figure 12:

I/P Harness - Left


(1)	SP201
(2)	Instrument Panel Cluster (IPC) Connector
(3)	S210
(4)	S211
(5)	C204
(6)	S230
(7)	S204
(8)	C202
(9)	C205
(10)	Data Link Connector (DLC) Connector
(11)	Fuse Block - Steering Column Fuse Box or Holder

Figure 13:

I/P Harness - Right


(1)	C214
(2)	C209
(3)	S212
(4)	S214
(5)	C200
(6)	S215
(7)	C201
(8)	C204
(9)	C304

Figure 14:

Steering Column


(1)	Telescoping Drive Motor
(2)	Steering Column Lock Control Module
(3)	Headlamp Switch
(4)	Tilt/Telescope Switch
(5)	C202
(6)	Tilt Actuator
(7)	C276

Figure 15:

C277


(1)	C277
(2)	Inflatable Restraint Steering Wheel Coil

Figure 16:

Body Harness - Front


(1)	Fuse Block - RR
(2)	G306
(3)	Fuse Block - LR
(4)	C302 (KA6)
(5)	C700
(6)	C300
(7)	C301
(8)	G307
(9)	C205
(10)	C205
(11)	S207
(12)	C500
(13)	G200
(14)	S205
(15)	C204
(16)	C206
(17)	C201
(18)	Fuse Block - Underhood C3
(19)	Fuse Block - Underhood C2
(20)	C213
(21)	C212
(22)	C101
(23)	S208
(24)	G201
(25)	S209
(26)	C600
(27)	C200
(28)	SP303
(29)	S303
(30)	S302
(31)	S306
(32)	C800
(33)	S317

Figure 17:

Body Harness - Rear


(1)	Backup Lamp - Right Connector
(2)	S401
(3)	Backup Lamp - Left Connector
(4)	G402
(5)	C308 (CF5)
(6)	G401
(7)	C305 (CF5)
(8)	C401 (UD7)
(9)	G403
(10)	C310 (CF5)

Figure 18:

Front Body Harness- Left Side


(1)	C300
(2)	C317
(3)	G306
(4)	Fuse Block-LR
(5)	C302
(6)	Splice Pack SP300
(7)	C323
(8)	G307
(9)	C301
(10)	G200
(11)	C321
(12)	C205

Figure 19:

Front Body Harness- Right Side


(1)	C318
(2)	C204
(3)	C212
(4)	C206
(5)	C201
(6)	C100
(7)	C101
(8)	C200
(9)	C217
(10)	C322
(11)	G201
(12)	C307
(13)	Splice Pack SP303
(14)	C324
(15)	Fuse Block-RR

Figure 20:

Driver Seat


(1)	Seat Lumbar Horizontal Motor
(2)	Seat Lumbar Vertical Motor
(3)	S363
(4)	S358
(5)	Seat Lumbar Switch Connector
(6)	Seat Adjuster Switch Connector
(7)	S353
(8)	S354
(9)	C301
(10)	S349
(11)	C300
(12)	S362
(13)	S356
(14)	S359
(15)	S352
(16)	S360

Figure 21:

Driver Seat


(1)	C312
(2)	C??
(3)	C319

Figure 22:

Passenger Seat


(1)	Seat Lumbar Vertical Motor
(2)	Seat Lumbar Horizontal Motor
(3)	S360
(4)	S359
(5)	S356
(6)	S358
(7)	C306
(8)	C307
(9)	S350
(10)	S354
(11)	S353
(12)	Seat Adjuster Switch Connector
(13)	Seat Lumbar Switch Connector
(14)	S362
(15)	S363

Figure 23:

Passenger Seat


(1)
(2)
(3)
(4)
(5)

Figure 24:

Console Harness


(1)	C212
(2)	C213
(3)	S313
(4)	Traction Control Switch Connector
(5)	Auxiliary Outlet Connector
(6)	Active Console Antenna
(7)	Rear Seat Audio Control Module Connector
(8)	Console Antenna Connector
(9)	Rear Mode Connector
(10)	Hazard Switch Connector
(11)	S311
(12)	S312
(13)	C304

Figure 25:

C215 and C216


(1)	C216
(2)	C304
(3)	Rear Console
(4)	C216
(5)	Speaker-Rear Console (UY5)

Figure 26:

Front Body Harness Splices


(1)	S (1852)
(2)	S (1952)
(3)	S (243)
(4)	S (43)
(5)	S (309)
(6)	S (709)
(7)	S (3740)
(8)	S (1856)
(9)	S (1956)

Figure 27:

Behind the Rear Seats


(1)	Rear Heated Seat Module
(2)	Seat Back Frame
(3)	Seat Cushion Frame
(4)	C302 (KA6)
(5)	C315 (KA6)

Figure 28:

Headliner Harness (w/o CF5)


(1)	C305
(2)	C308
(3)	S309
(4)	S308
(5)	Vanity Mirror Lamp - Left Connector
(6)	S310
(7)	Inside Rearview Mirror Connector
(8)	Rain Sensor Connector
(9)	Vanity Mirror Lamp - Right Connector

Figure 29:

Headliner Harness (CF5)


(1)	C309
(2)	C305
(3)	S308
(4)	C308 (CF5)
(5)	S309
(6)	S310
(7)	Sunroof Assembly
(8)	Vanity Mirror Lamp - Left Connector
(9)	Sunroof Control Switch Connector
(10)	Inside Rearview Mirror Connector
(11)	Rain Sensor Connector
(12)	Vanity Mirror Lamp - Right Connector

Figure 30:

Left Front Door Frame and Trim Harnesses


(1)	Driver Door Status Indicator
(2)	C501
(3)	Driver Door Lock Switch Connector
(4)	Door Frame
(5)	C500
(6)	Speaker - LF Door Connector
(7)	S502
(8)	S501
(9)	Door Courtesy Lamp - LF Connector
(10)	Trunk Release Switch Connector
(11)	S504

Figure 31:

Right Front Door Frame and Trim Harnesses


(1)	Door Frame
(2)	Passenger Door Lock Switch Connector
(3)	Passenger Window Switch Connector
(4)	C601
(5)	Passenger Door Status Indicator Connector
(6)	S601
(7)	Trunk Release Switch Connector
(8)	Door Courtesy Lamp - RF Connector
(9)	S603
(10)	S600
(11)	Speaker - RF Door Connector
(12)	C600

Figure 32:

Left Rear Door Frame and Trim Harnesses


(1)	Window Switch - LR Connector
(2)	Door Frame
(3)	C700
(4)	S700
(5)	Speaker - LR Door Connector
(6)	Door Courtesy Lamp - LR Connector
(7)	C701

Figure 33:

Right Rear Door Frame and Trim Harnesses


(1)	Door Frame
(2)	C801
(3)	Door Courtesy Lamp - RR Connector
(4)	Window Switch - RR Connector
(5)	Speaker - RR Door Connector
(6)	S800
(7)	C800

Figure 34:

C420


(1)	Body Harness
(2)	Fuel Tank
(3)	C420
(4)	Spare Tire Well

Figure 35:

Rear Fascia and Trailer Harnesses


(1)	LR Side Marker Lamp Connector
(2)	S400
(3)	S404
(4)	S402
(5)	RR Side Marker Lamp Connector
(6)	C401 (UD7)
(7)	Tire Pressure Sensor - RR Connector
(8)	Rear Fascia
(9)	Object Sensor - RR Corner Connector
(10)	Object Sensor - RR Middle Connector
(11)	Trailer Harness
(12)	Object Sensor - LR Middle Connector
(13)	Object Sensor - LR Corner Connector
(14)	S405
(15)	Tire Pressure Sensor - LR Connector
(16)	S140

Figure 36:

Rear Bumper Fascia-Export


(1)	Object Sensor-RR Corner (UD7)
(2)	Object Sensor-RR Middle (UD7)
(3)	Object Sensor-RR Middle (UD7)
(4)	Object Sensor-LR Corner (UD7)
(5)	Marker Lamp-LR
(6)	C402
(7)	Tire Pressure Receiver-LR (UH3)
(8)	Fog Lamp-LR (TT7/TT8)
(9)	Fog Lamp-RR (TT7/TT8)
(10)	C400
(11)	Tire Pressure Receiver-RR (UH3)
(12)	C401 (UD7)
(13)	Marker Lamp-RR

Figure 37:

Engine Harness Routing 1 of 2 (LC3)


(1)	C142 Engine Harness to Ignition Module Odd Harness Jumper
(2)	S100
(3)	S151
(4)	S152
(5)	S118
(6)	S117
(7)	C113 Engine Harness to Forward Lamp Harness
(8)	C117 Engine Harness to Transmission Harness
(9)	C101 Engine Harness to Body Harness
(10)	C118 Engine Harness to Body Harness
(11)	S101

Figure 38:

Engine Harness Routing 2 of 2 (LC3)


(1)	S147
(2)	C103 Engine Harness to I/P Harness
(3)	C105 Engine Harness to Starter Jumper Harness
(4)	S104
(5)	S131
(6)	C119 Engine Harness to Knock Sensor/Crankshaft Sensor Jumper Harness
(7)	S102
(8)	G100
(9)	G107
(10)	S113
(11)	C141 Engine Harness to Ignition Module Even Jumper Harness
(12)	C101 Engine Harness to Body Harness