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Vehicle Wiring Details for your
2005-2010 Chevrolet Cobalt Wiring Diagram
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Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 2005-2010 Chevrolet Cobalt . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections. More information on using a multimeter and testing wires please see our Technical Support Area.

 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED/BLACK (+)   @ BCM, RED 41-PIN PLUG(X3), PIN D1, SEE NOTE #2
 STARTER  SEE NOTE #1  
 STARTER 2  N/A  
 IGNITION 1  YELLOW (+)  @ IGNITION SWITCH, GREEN 6-PIN PLUG, PIN 3
 IGNITION 2  N/A  
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  BROWN (+)  @ IGNITION SWITCH, GREEN 6-PIN PLUG, PIN 4
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  BROWN/WHITE (-)  @ HEADLIGHT SWITCH or BCM, GRAY 72-PIN PLUG(X2), PIN 5, SEE NOTE #2
 PARKING LIGHTS ( + )  BROWN (+)  @ BCM, RED 41-PIN PLUG(X3), PIN A7, SEE NOTE #2
 POWER LOCK  SEE NOTE #1  
 POWER UNLOCK  SEE NOTE #1  
 DOOR TRIGGER  GRAY/BLACK (-)  @ BCM, GRAY 72-PIN PLUG(X1), PIN 22, SEE NOTE #2
 DOMELIGHT SUPERVISION  GRAY (-)  @ BCM, RED 41-PIN PLUG(X3), PIN A10, SEE NOTE #2
 TRUNK RELEASE  TAN (-)  @ TRUNK RELEASE SWITCH or BCM, GRAY 72-PIN PLUG(X2), PIN 10, SEE NOTE #2
 SLIDING POWER DOOR  N/A  
 HORN  TAN (-)  @ HORN SWITCH or BCM, GRAY 72-PIN PLUG(X2), PIN 14, SEE NOTE #2
 TACH  SEE NOTE #3  
 WAIT TO START LIGHT  N/A  
 BRAKE  LT. BLUE (+)  @ BRAKE PEDAL SWITCH or BCM, GRAY 72-PIN PLUG(X2), PIN 54, SEE NOTE #2
 FACTORY ALARM DISARM   DISARMS WITH FACTORY REMOTE ONLY!!  
 ANTI-THEFT  GM'S MULTIPLEX IGNITION/ANTI-THEFT SYSTEM, See NOTE #1  
 EXTRA INFORMATION
 NOTE #1: This Vehicle is equipped with GM'S MULTIPLEX IGNITION/ANTI-THEFT SYSTEM and requires a Special INTERFACE BYPASS MODULE for REMOTE STARTING and KEYLESS ENTRY, PART # DB-ALL for the 2005-2006, on the 2007-2010 use the PART # DB-ALL or XK09, to order please go to the INTERFACE BYPASS MODULE PAGE on this website. NOTE #2: The BCM is part of the DASH FUSEBOX, on the front Passenger side of the Center console. NOTE #3: The TACH wire on the 2.2L is any wire NOT PINK, at any FUEL-INJECTOR and on the 2.0L it is any wire NOT PINK/BLACK at any FUEL-INJECTOR.
 
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