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Vehicle Wiring Details for your
2005-2006 Scion TC 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 2005-2006 Scion TC . 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 (+)   @ IGNITION SWITCH HARNESS
 STARTER  BLACK (+)  @ IGNITION SWITCH HARNESS
 STARTER 2  GREEN (+)  @ IGNITION SWITCH HARNESS
 IGNITION 1  BLUE (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  YELLOW (+)  @ IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  GRAY (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  BLACK (-)  @ IGNITION SWITCH HARNESS
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  BROWN (+)  @ TOP FUSE BOX, 30-PIN PLUG, PIN 29
 POWER LOCK  GREEN to BLUE (TYPE B) See NOTE #3  IN DRIVERS KICK PANEL, 20-PIN PLUG, PIN 15
 POWER UNLOCK  PURPLE to PINK (TYPE B) (REQUIRES DOUBLE PULSE) See NOTE #3  IN DRIVERS KICK PANEL, 20-PIN PLUG, PIN 14
 DOOR TRIGGER  See NOTE #2  TOP of FUSE BOX
 DOMELIGHT SUPERVISION  BLUE (-), Requires Part #775 Relay  @ LEFT SIDE OF FUSE BOX, 6-PIN PLUG, PIN 2
 TRUNK RELEASE  ORANGE (-), Requires Part #775 Relay  IN DRIVERS KICK PANEL, GRAY 12-PIN PLUG, PIN 12
 SLIDING POWER DOOR  N/A  
 HORN  WHITE ( - )  @ STEERING COLUMN HARNESS
 TACH  BLACK (AC)  @ CHECK CONNECTOR
 WAIT TO START LIGHT  N/A  
 BRAKE  BLUE ( + )  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   DISARMS with KEYSENSE wire  @ IGNITION SWITCH HARNESS
 ANTI-THEFT  TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1  TRANSPONDER @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE #1: TOYOTA'S TRANSPONDER SYSTEM, Requires Bypass Module: (For Remote Starting Only) Part #791 Bypass, (Requires Extra Key) for Operation. (For Remote Starting Only) Part # PK-ALL Bypass. (No Extra Key Required for Operation) 2-KEYS Required to Program Module. To order please go to the SECURITY BYPASS MODULE Page or INTERFACE BYPASS MODULE Page on this website. NOTE #2: DRIVER DOOR IS ORANGE(-) IN A 30-PIN PLUG, PIN 21 . THE PASSENGER DOOR IN A BLUE(-) 16-PIN PLUG, PIN 14 . WHEN CONNECTING TO AN ALARM SYSTEM USE BOTH DOOR TRIGGER WIRES AND DIODE ISOLATE, TO CONNECT, SEE DIAGRAM. NOTE #3: TEST THE LOCK AND UNLOCK WIRES WHILE TURNING THE KEY IN THE DRIVERS DOOR KEY CYLINDER.
 
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