Cadillac  CTS 2003-
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   Connect to BATTERY ONLY!!!  
 STARTER  YELLOW (+)  IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  PINK (+)  IGNITION SWITCH HARNESS
 IGNITION 2  N/A  
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  ORANGE (+)  IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  BROWN (+)  IGNITION SWITCH HARNESS
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  BROWN/WHITE (-)  @ DIM, BROWN Plug, Pin B3, See NOTE #2
 PARKING LIGHTS ( + )  DO NOT USE!  
 POWER LOCK  ORANGE/BLACK (TYPE B)  @ DRIVERS DOOR LOCK SWITCH in DOOR
 POWER UNLOCK  ORANGE/BLACK (TYPE B)  @ DRIVERS DOOR LOCK SWITCH in DOOR
 DOOR TRIGGER  GRAY (-)  @ UNDER DASH LIGHT
 DOMELIGHT SUPERVISION  TURNS ON with Disarm wire  
 TRUNK RELEASE  LIGHT BLUE (-)  @ RIM, RED Plug, Pin B4, See NOTE #3
 SLIDING POWER DOOR  N/A  
 HORN  TAN (-)  @ DIM, GRAY Plug, Pin A6, See NOTE #2
 TACH  WHITE (AC)  @ ECM, Connector 2 Pin 35, See NOTE #4
 WAIT TO START LIGHT  N/A  
 BRAKE  LT. BLUE/WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   LT. GREEN (-)  @ DRIVERS DOOR MODULE in DRIVERS DOOR
 ANTI-THEFT  GM's TRANSPONDER SYSTEM, See NOTE #1  @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE #1: This vehicle is equipped with GM'S TRANSPONDER ANTI-THEFT SYSTEM and Requires 791 Bypass Module and an Extra Ignition Key for Remote starting operation. to order go to the SECURITY BYPASS MODULE Page on this website. NOTE #2: the DIM Module is located UNDER the GLOVE BOX. NOTE #3: the RIM Module is located under the Rear deck on the Passenger side. NOTE #4: the ECM is located on the Passenger side of the engine.