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2003 Chevrolet Monte Carlo Alarm Wire Chart

2003 Chevrolet Monte Carlo Alarm Wires

Find the right alarm wire colors, locations, and polarity with this 2003 Chevrolet Monte Carlo alarm wiring diagram. This will help you install your car alarm wiring correctly.

Application Wire Color and Location
Battery Constant 12v+ Positive Wire (+) Red (It may be necessary to remove the radio to get to the back of the ignition switch. When removing the radio, do not unplug. All ignition connections must be made at the back of the ignition switch.)
Battery Constant 12v+ Positive Wire Location Ignition Switch Harness
Starter Positive Wire (+) Yellow (It may be necessary to remove the radio to get to the back of the ignition switch. When removing the radio, do not unplug. All ignition connections must be made at the back of the ignition switch.)
Starter Positive Wire Location Ignition Switch Harness
Ignition Positive Wire (+) Pink (It may be necessary to remove the radio to get to the back of the ignition switch. When removing the radio, do not unplug. All ignition connections must be made at the back of the ignition switch.)
Ignition Positive Wire Location Ignition Switch Harness
Second Ignition Positive Wire (+) Green (It may be necessary to remove the radio to get to the back of the ignition switch. When removing the radio, do not unplug. All ignition connections must be made at the back of the ignition switch.)
Second Ignition Positive Wire Location Ignition Switch Harness
Accessory Positive Wire (+) Orange (It may be necessary to remove the radio to get to the back of the ignition switch. When removing the radio, do not unplug. All ignition connections must be made at the back of the ignition switch.)
Accessory Positive Wire Location Ignition Switch Harness

2003 Chevrolet Monte Carlo Alarm Sensor Wires

Find the right alarm sensor wire colors, locations, and polarity with this 2003 Chevrolet Monte Carlo alarm sensor wire chart. This will help you connect all your car alarm sensors correctly.

Application Wire Color and Location
Parking Light Negative Wire (-) White (An extra relay part is need for the (-) negative parking light isolation circuit on this vehicle.)
Parking Light Negative Wire Location At BCM, Pink Plug, Pin A2. The BCM (body control module) is located just above the brake pedal. It is a plastic box with (3) plugs that face firewall.
Parking Light Positive Wire (+) Do Not Use.
Parking Light Positive Wire Location N/A
Power Door Lock Negative Wire (-) Orange/Black (1-Wire System). This vehicle is a 1 wire door locking system, a (-) negative through a 480 ohm resistor will lock the doors and a straight (-)negative will unlock the doors, for this to operate properly all doors must be closed.
Power Door Lock Negative Wire Location At BCM, Gray 24-Pin Plug. The BCM (body control module) is located just above the brake pedal. It is a plastic box with (3) plugs that face firewall.
Power Door Unlock Negative Wire (-) Same Wire As Above
Power Door Unlock Negative Wire Location N/A
Door Trigger Positive Wire (+) This vehicle has (2) door trigger wires. The blue (-) is for the drivers door and the blue/white (-) is for the passengers door. When connecting to an alarm system uses both wires and diode isolate.
Door Trigger Positive Wire Location At BCM, Gray 16-Pin Plug. The BCM (body control module) is located just above the brake pedal. It is a plastic box with (3) plugs that face firewall.
Dome Light Supervision Wire (-) Blue
Dome Light Supervision Wire Location At BCM, Gray 16-Pin Plug. The BCM (body control module) is located just above the brake pedal. It is a plastic box with (3) plugs that face firewall.
Trunk Release Negative Wire (-) Black (Requires Relay)
Trunk Release Negative Wire Location At Trunk Release Switch
Horn Negative Negative Wire (-) Black
Horn Negative Negative Wire Location At Steering Column Harness
Tachometer Wire Negative Wire (-) White
Tachometer Wire Negative Wire Location At Ignition Module
Brake Light Positive Wire (+) White
Brake Light Positive Wire Location At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-) Light Green
Factory Alarm Disarm Wire Location At BCM, Gray 16-Pin Plug. The BCM (body control module) is located just above the brake pedal. It is a plastic box with (3) plugs that face firewall.
Factory Anti-Theft Wire Yellow (+) and Black (-) and White (Not Used)
Factory Anti-Theft Wire Location GM Passlock 2 System (Wires Are At The Top Of The Ignition Switch Tumbler).

Feel free to use any 2003 Chevrolet Monte Carlo 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 2003 Chevrolet Monte Carlo 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 2003 Chevrolet Monte Carlo.

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