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Vehicle Wiring Details for your
2007-2010 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 2007-2010 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, (WHITE, 8-PIN PLUG), PIN 7
 STARTER  BLACK (+)  @ IGNITION SWITCH, (WHITE, 8-PIN PLUG), PIN 8
 STARTER 2  GREEN (+)  @ IGNITION SWITCH, (WHITE, 8-PIN PLUG), PIN 1
 IGNITION 1  BLUE (+)  @ IGNITION SWITCH, (WHITE, 8-PIN PLUG), PIN 6
 IGNITION 2  YELLOW (+)  @ IGNITION SWITCH, (WHITE, 8-PIN PLUG), PIN 4
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  GRAY (+)  @ IGNITION SWITCH, (WHITE, 8-PIN PLUG), PIN 3
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  BROWN (-)  @ HEADLIGHT Switch, (WHITE, 17-PIN PLUG), PIN 14
 PARKING LIGHTS ( + )  BROWN (+)  @ DASH FUSE BOX, (WHITE, 30-PIN PLUG(A), PIN 29
 POWER LOCK  RED to GRAY (TYPE B), NOTE #2  in DRIVERS KICK PANEL, (WHITE, 20-PIN PLUG), PIN 19
 POWER UNLOCK  PINK to PURPLE (TYPE B), NOTE #3  in DRIVERS KICK PANEL, (WHITE, 20-PIN PLUG), PIN 18
 DOOR TRIGGER  ORANGE (-)  @ DASH FUSE BOX, (WHITE, 30-PIN PLUG(A), PIN 21
 DOMELIGHT SUPERVISION  BLUE (-)  @ DASH FUSE BOX, (WHITE, 6-PIN PLUG(K), PIN 2
 TRUNK RELEASE  ORANGE (-) NOTE #4  in DRIVERS KICK PANEL, (GRAY, 12-PIN PLUG), PIN 12
 SLIDING POWER DOOR  N/A  
 HORN  WHITE (-)  @ HORN Switch or DASH FUSE BOX, (WHITE, 32-PIN PLUG(E), PIN 25
 TACH  BLACK (AC)  @ DATA LINK Connector, (WHITE, 16-PIN PLUG), PIN 9, Under Drivers Dash
 WAIT TO START LIGHT  N/A  
 BRAKE  BLUE (+)  @ BRAKE PEDAL Switch or DASH FUSE BOX, (WHITE, 30-PIN PLUG(A), PIN 9
 FACTORY ALARM DISARM   PURPLE to PINK (-) NOTE #5  in DRIVERS KICK PANEL, (WHITE, 20-PIN PLUG), PIN 14
 ANTI-THEFT  SCION'S 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: this wire is only needed if the Door Locks do not function with the Aftermarket System while the vehicle is running. All other times just use the Factory Alarm Arm wire, Green to Blue(DRIVERS KICK PANEL, 20PIN PLUG, PIN 15) Test wire by turning key in drivers door lock NOTE #3: this wire is only needed if the Door Locks do not function with the Aftermarket System while the vehicle is running. All other times just use the Factory Alarm Disarm wire,Purple to Pink(DRIVERS KICK PANEL, 20PIN PLUG, PIN 14) REQUIRES DOUBLE PULSE, Test wire by turning key in drivers door. NOTE #4: TEST this wire while Opening the Hatch with the Handle on the REAR of the Vehicle. NOTE #5: TEST this wire while turning the Key in the Drivers Door, this wire will also Unlock the doors.
 
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