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2007 Scion tC, Car Alarm Wiring Diagram Detailed

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Member - Posts: 28
Member spacespace
Joined: January 11, 2006
Location: United States
Posted: June 08, 2023 at 12:32 PM / IP Logged Link to Post Post Reply Quote raulromo34
12 VOLTS      Red      Ignition switch harness       + (For all the ignition and starter wires, take of the cover behind the steering wheel)its 2 small screws. if you turn the steering wheel you will see the screws) follow the ignition wires down some towards the steering column, and you will find them all there, as well as the horn honk wire. (horn honk is a thin white wire and is - ).
IGNITION      Blue      Ignition switch harness       +
IGNITION 2      Yellow      Ignition switch harness       +
ACCESSORY      Gray      Ignition switch harness       +
STARTER      Black      Ignition switch harness       +
STARTER 2      Green      Ignition switch harness       +
TACH SIGNAL      Black      At diagnostic plug under dash       AC
LOCK      Green      On 20-pin plug in driver's kick panel       - (must close the door latch to test door lock wires)
UNLOCK      Violet      On 20-pin plug in driver's kick panel       - (must close the door latch to test door lock wires)
DOOR PIN      SEE NOTES                
          Driver's door is ORANGE is in a large harness located at the top left of the fuse box(as your looking at the fuse box) and passenger door is BLUE, but i could not find it at this harness, or any other harness. so i ran a wire from alarm to the passenger side kick panel and found a thin blue wire in the harness going toward the pin switch. it is a ground -
TRUNK PIN      Purple      On top LEFT OF fuse panel       - (large harness at the top left side of the fuse box as your looking at the fuse box)
TRUNK RELEASE      Orange      On 12-pin plug in driver's kick panel       -
FACTORY ARM      Arms with lock wire                
FACTORY DISARM      Disarms with unlock                
BRAKE SWITCH      Blue      At switch above brake pedal       +
PARKING LIGHTS      Brown      On top of fuse panel       + (AT 2ND large harness from left to right at the fuse box (top left side) there are a few thin brown wires that will work for the parking lights
HAND BRAKE      Black      At switch on handbrake lever       -
HORN      White      At steering column       - (thin white wire coming down the steering column wires)-take the cover off that is behind the steering wheel ( two small screws). ignition wires are there also
VSS WIRE      Violet      At ECM (behind glove box)       AC
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Disclaimer: *All information on this site ( ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

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