2003 Oldsmobile Alero Auto Alarm Wiring Diagram


Whether your an expert Oldsmobile Alero car alarm installer, Oldsmobile Alero performance fan or a novice Oldsmobile Alero enthusiast with a 2003 Oldsmobile Alero, a Oldsmobile Alero car alarm wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car alarm, car security, car remote start, automatic remote starter, shock sensor, tilt sensor, car alarm sensor or any auto alarm is identifying the correct color car security wires for a 2003 Oldsmobile Alero headlight bulb size you need for your low beam or high beam and save time. Also, find your other car light bulb sizes including your fog light, reverse light, turn signal, brake light and more. It’s that easy!

The Modified Life staff has taken all its Oldsmobile Alero car alarm wiring diagrams, Oldsmobile Alero car security wiring diagrams, Oldsmobile Alero car alarm wire diagrams, Oldsmobile Alero car security wiring schematics, Oldsmobile Alero car security diagrams, Oldsmobile Alero remote starter wiring diagrams and cataloged them online for our visitors to use for free. Our automotive wiring diagrams allow you to enjoy your new auto security electronics rather than spend countless hours trying to figure out which wires goes where.

Feel free to use any Oldsmobile Alero auto alarm wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the auto security wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 Oldsmobile Alero.

Questions

If you have any questions pertaining to the car wiring in a 2003 Oldsmobile Alero, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you are looking for.

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If you would like to help the Modified Life community by adding a car security wire schematic, car alarm wire diagram, car remote starter wire diagram, auto remote starter wire diagram or auto security wire diagram to our resource, please feel free to post any additional car wiring information about the 2003 Oldsmobile Alero on this page.

2003 Oldsmobile Alero Car Alarm Wiring Diagram

Battery Constant 12v+ Positive Wire (+): Red and Red/Black
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness

Starter Positive Wire (+): Yellow
Starter Positive Wire Location: Ignition Switch Harness

Ignition Positive Wire (+): Pink
Ignition Positive Wire Location: Ignition Switch Harness

Secondary Ignition Positive Wire (+): Dark Green
Secondary Ignition Positive Wire Location: Ignition Switch Harness

Accessory Positive Wire (+): Orange
Accessory Positive Wire Location: Ignition Switch Harness

Parking Light Negative Wire (-): White
Parking Light Negative Wire Location: At BCM (Gray Plug, Pin B1). The BCM is located between the blower motor and the passenger kick panel.

Parking Light Positive Wire (+): Brown
Parking Light Positive Wire Location: At BCM (Light Gray Plug, Pin B8). The BCM is located between the blower motor and the passenger kick panel.

Power Door Lock Negative Wire (-): White (1-Wire Door Lock System). This vehicle uses a 1-wire door locking system, lock requires a straight (-) negative and unlock requires a (-) negative through a 1500 ohm resistor, some units will also require extra relays.
Power Door Lock Negative Wire Location: At BCM (Light Gray Plug, Pin A2). The BCM is located between the blower motor and the passenger kick panel.

Power Door Unlock Negative Wire (-): Same As Above Wire.
Power Door Unlock Negative Wire Location: N/A

Door Trigger Positive Wire (+): This vehicle has a green/black (-) for the drivers door in the gray plug, pin B7 at the BCM and a light blue (-) for all other doors in the light gray plug, pin B10 at the BCM. When connecting to an alarm system, use both wires and diode isolate.
Door Trigger Positive Wire Location: N/A

Domelight Supervision Wire (-): Green/Black
Domelight Supervision Wire Location: At BCM (Gray Plug, Pin B7). The BCM is located between the blower motor and the passenger kick panel.

Trunk Release Negative Wire (-): Black
Trunk Release Negative Wire Location: At BCM (Light Gray Plug, Pin A7). The BCM is located between the blower motor and the passenger kick panel.

Horn Negative Negative Wire (-): Black
Horn Negative Negative Wire Location: At BCM (Gray Plug, Pin A4). The BCM is located between the blower motor and the passenger kick panel.

Tachometer Wire Negative Wire (-): White Or Purple/White
Tachometer Wire Negative Wire Location: At PCM. The PCM (powertrain control module) is located under the drivers side of dash, left of the steering column.

Brake Light Positive Wire (+): Light Blue
Brake Light Positive Wire Location: At Switch Above Brake Pedal

Factory Alarm Disarm Wire: N/A
Factory Alarm Disarm Wire Location: N/A

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.

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