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Vehicle Wiring Details for your
2003-2007 Saturn Ion 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 2003-2007 Saturn Ion . 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 (+)   @ BCM, C1 PIN 37 and 34, See NOTE #1
 STARTER  SEE NOTE #4  
 STARTER 2  N/A  
 IGNITION 1  DARK BLUE (+)  IGNITION SWITCH HARNESS
 IGNITION 2  N/A  
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  BROWN (+)  IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  BROWN (+)  @ HEADLIGHT SWITCH
 POWER LOCK  WHITE (1-Wire System) See NOTE #2  @ BCM C3, PIN 33, See DIAGRAMS
 POWER UNLOCK  Same wire, See DIAGRAM  See DIAGRAMS
 DOOR TRIGGER  SEE NOTE #3  @ BCM, See NOTE #1
 DOMELIGHT SUPERVISION  WHITE (-)  @ BCM C3, IN PIN 11, See NOTE #1
 TRUNK RELEASE  BLACK/WHITE (+)  @ BCM C3, IN PIN 1, See NOTE #1
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-)  @ STEERING COLUMN HARNESS
 TACH  WHITE or ORANGE (AC)  IN PIN B or G @ MODULE, TOP LEFT OF ENGINE
 WAIT TO START LIGHT  N/A  
 BRAKE  LIGHT BLUE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   N/A  
 ANTI-THEFT  SATURN'S MULTIPLEX IGNITION/TRANSPONDER SYSTEM, See NOTE #4  
 EXTRA INFORMATION
 NOTE #1: THE BCM (Body Control Module) IS PART OF THE FUSE/RELAY BOX IN THE LOWER CENTER OF THE DASH,JUST BELOW THE HVAC CONTROL ASSEMBLY.IT HAS THE FOLLOWING CONNECTORS:C1-37 PIN BLACK PLUG,C2-38 PIN GRAY PLUG,C3-56 PIN BLACK PLUG,C4-56 PIN GRAY PLUG,AND C5-6 PIN GRAY PLUG. NOTE #2 LOCK IS A STRAIGHT (-) NEGATIVE TRIGGER. UNLOCK IS A NEGATIVE THRU 1.5K OHM RESISTOR, IF THE UNIT DOES NOT HAVE ON BOARD DOOR LOCK RELAYS, EXTRA RELAYS PART #775,WILL BE REQUIRED, See DIAGRAMS. NOTE #3 THE DRIVERS DOOR TRIGGER IS LIGHT GREEN/BLACK (-) IN PIN 45 AND THE PASSENGER DOOR(S) IS LIGHT BLUE (-) IN PIN 44. WHEN CONNECTING TO AN ALARM SYSTEM USE BOTH DOOR TRIGGER WIRES AND DIODE ISOLATE, TO CONNECT, SEE DIAGRAM. NOTE #4: THIS VEHICLE REQUIRES AN INTERFACE BYPASS MODULE TO REMOTE START, PART # DB-ALL or XK09, TO ORDER PLEASE GO TO THE INTERFACE BYPASS MODULE PAGE ON THIS WEBSITE OR CALL 1-800-659-0764
 
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