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2012 Ford Fiesta Car Alarm Wire Chart

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2012 Ford Fiesta Alarm Wires

Find the right alarm wire colors, locations, and polarity with this 2012 Ford Fiesta alarm wiring diagram. This will help you install your car alarm wiring correctly.

Application Wire Color and Location
Battery Constant 12v+ Positive Wire (+) Red
Battery Constant 12v+ Positive Wire Location Ignition Switch Harness
Starter Positive Wire (+) Blue/White
Starter Positive Wire Location Ignition Switch Harness
Second Starter Positive Wire (+) N/A
Second Starter Positive Wire Location N/A
Ignition Positive Wire (+) Brown/Yellow
Ignition Positive Wire Location Ignition Switch Harness
Second Ignition Positive Wire (+) N/A
Second Ignition Positive Wire Location N/A
Third Ignition Positive Wire (+) N/A
Third Ignition Positive Wire Location N/A
Accessory Positive Wire (+) Violet/Green
Accessory Positive Wire Location Ignition Switch Harness
Second Accessory Positive Wire (+) N/A
Second Accessory Positive Wire Location N/A
Key Sense Wire Blue/Gray
Key Sense Wire Location Ignition Switch Harness

2012 Ford Fiesta Alarm Sensor Wires

Find the right alarm sensor wire colors, locations, and polarity with this 2012 Ford Fiesta alarm sensor wire chart. This will help you connect all your car alarm sensors correctly.

Application Wire Color and Location
Parking Light Negative Wire (-) Yellow/Blue
Parking Light Negative Wire Location Ignition Switch Harness
Parking Light Positive Wire (+) N/A
Parking Light Positive Wire Location N/A
Power Door Lock Negative Wire (-) Gray/Brown
Power Door Lock Negative Wire Location At BCM Module Above the Passenger Footwell Behind the Glove Box
Power Door Unlock Negative Wire (-) Brown/Green
Power Door Unlock Negative Wire Location At BCM Module Above the Passenger Footwell Behind the Glove Box
Door Trigger Negative Wire (-) Green
Door Trigger Negative Wire Location At Small Under Dash Light
Dome Light Supervision Wire (-) Yellow/Gray
Dome Light Supervision Wire Location At BCM Module Above the Passenger Footwell Behind the Glove Box
Trunk Trigger Negative Wire (-) Yellow/Orange
Trunk Trigger Negative Wire Location At BCM Module Above the Passenger Footwell Behind the Glove Box
Trunk Release Negative Wire (-) N/A
Trunk Release Negative Wire Location N/A
Sliding Power Door Wire N/A
Sliding Power Door Wire Location N/A
Horn Negative Wire (-) Brown
Horn Negative Wire Location At BCM Module Above the Passenger Footwell Behind the Glove Box
Tachometer Wire Negative Wire (-) N/A
Tachometer Wire Negative Wire Location N/A
Wait To Start Wire N/A
Wait To Start Location N/A
Brake Light Positive Wire (+) Blue/Gray
Brake Light Positive Wire Location At Switch Above the Brake Pedal
Factory Alarm Arm Wire (-) Yellow/Gray
Factory Alarm Arm Wire Location At BCM Module Above the Passenger Footwell Behind the Glove Box
Factory Alarm Disarm Wire (-) Violet/Brown
Factory Alarm Disarm Wire Location At BCM Module Above the Passenger Footwell Behind the Glove Box
Factory Anti-Theft System Ford PATS or Securilock Key Vehicle Immobilizer
Factory Anti-Theft System Location Key Sends RF Signal to the BCM Module

Feel free to use any 2012 Ford Fiesta alarm wiring diagram that is listed here but keep in mind that all information here is provided as is without any warranty of any kind. Use of this 2012 Ford Fiesta car alarm wire chart is at your own risk. Always verify all wires, wire colors and connection points before applying any information found here to your 2012 Ford Fiesta.

3 thoughts on “2012 Ford Fiesta Car Alarm Wire Chart”

  1. Hi there, I have a 2012 ford fiesta SE which I intend to fit an aftermarket alarm to. First question I would like to ask is, does the SE model have a factory alarm? First off, when the lock button is pressed twice on the key fob, the horn honks as if to signal that an alarm is engaged. However, it does not react to any shocks or when the doors are opened from the inside through an open window whiles the car is locked. So does it have an alarm or not? Second question has to do with wiring the door open signal to the aftermarket alarm. It appears that on the fiesta, all doors have individual signals, which in effect makes it a bit of a challenge integrating it into the venom aftermarket alarm that I have here with only one feed into the system for the door open signal. Any way I come work around that?

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