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Door Lock

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As basic as it may seem, the door lock is one of your vehicle's most useful defenses against thieves. Each of the doors is usually equipped with its own lock, which can be activated manually or remotely.When engaged, these door locks prevent entry into your vehicle. This function is especially helpful when you leave your vehicle in public parking lots that offer little security. Recent vehicle models are usually equipped with door locks that can be activated and deactivated using a handheld electronic device.But however your vehicle's door locks are activated, the fact remains that you should keep it in top shape. In case you need a replacement, we have a wide array of door lock products here at Carparts.We offer you door locks designed for specific vehicle models, so you don't have to worry about installation.


• Secures your vehicle's doors against unauthorized entry

• Made from durable materials to ensure reliable functions

• Can be upgraded through easy-to-install aftermarket replacements

Door Lock Articles

  • How to Install Protective Door Locks in Your Vehicle 11 January 2013

    Car door locks are an essential component of anti-theft protection on your automobile, preventing burglars from stealing valuables and acting as an important safety feature to prevent children from opening the door and falling out into the road through it while the vehicle is moving.

    Required skill level: Expert

    Needed tools and materials

    1. Voltage meter
    2. Flat-head screwdriver
    3. Wire cutters
    4. Wire strippers
    5. Electrical tape
    6. Adjustable wrench

    Getting to know more about your vehicle

    Review the repair manual for your car, noting any warnings with respect to electrical components including airbags, brakes, on-board computers, and batteries. Keep the repair manual handy so you can refer to it if needed as you work through this project.

    Doing away with preliminaries such as disconnecting some parts of the car

    Before you can install locks in your car door, preliminaries have to be done, including removing some parts of the car so that the lock can be put in place. You should first remove the panel from the inside of the car door by sliding a flat-head screwdriver between the panel and the door frame and prying it free. After that, locate the power lock mechanism and remove the retaining bolts with an adjustable wrench.

    Disconnecting and reconnecting wires of the door lock

    After you have removed the retaining bolts, disconnect all wires from the lock mechanism using wire cutters and then remove the lock assembly from the door. Next, you have to feed the negative parking light wire through the door and trace the existing negative parking light wire to the back of the light switch. Covering the exposed wire with electrical tape should be done next. After doing so, connect the opposite end of the negative parking light wire to the correct mount on the new power lock assembly.

    Setting up the ground wire

    Run the ground wire to the location on your car as stated by the door lock manufacturer. After doing so, connect the opposite end of the ground wire to the appropriate mount on the new power lock assembly.

    Setting up the ignition wire

    Locate the ignition wires in your car and find one with +12 volts by testing the voltage of the wires using a voltmeter. After that, connect the ignition wire to the appropriate mount on the new power lock assembly.

    Setting up the system-chassis ground wire

    Run the system-chassis ground wire through the door and trace the existing chassis ground wire to the engine block, under the hood of the car. After doing so, connect the opposite end of the chassis ground wire to the appropriate mount on the new power lock assembly.

    Setting up the power input wire

    Run the +12 volt power input wire through the door, into the dash panel, through the back of the dash panel into the engine block, and then connect the opposite end of the power input wire to the appropriate mount.

    Testing the new power lock

    Press the "Lock" and "Unlock" buttons to verify that the lock on the door works in tandem with the switches on the power lock; recheck your wiring and repeat the process to make sure all the wires are properly connected if it fails to do so.

    Remounting the bolts

    Insert the mounting bolts into corresponding slots. Proceed to assembling the unit by tightening the retaining nuts. After this last step, you may now reinstall the car door panel and experience a safe ride with your new car door lock.