How to Install a Car Security System
Owners of expensive cars or cars with a lot of options appreciate a good security system to help keep it safe. You can purchase a number of aftermarket security systems rather than going with stock alarms, and while going to a professional to install it makes a lot of sense, you can save money and install the system yourself if you possess the proper know-how.
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Instructions
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Pick the best spot on your car for the various components of your security system. You generally want to choose spots that do not interfere with the instruments, your vision or your ability to operate the car. Some models specify placement in the trunk of the car, while others are placed under the dash or in areas specifically set aside in the car's design.
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Disconnect the negative terminal on the car battery. Never install an auto security system while the electricity is running.
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3
Unscrew any coverings or outlets, as dictated by the instructions in your security system manual. You may need to detach a piece of the dashboard or uncover the frame in some specified spot. The details will vary, according to the specific model of the security system.
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4
Attach the alarm to an inconspicuous spot on the body of the car. Beneath the trunk door is a common location, though the instruction manual may recommend others. Use a screwdriver or a drill to secure the siren.
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5
Connect the main module of the security system to the spot which you have chosen. Some are designed to be snap-mounted or screwed in, while others must be secured with a drill or bolts. Check your instruction manual for particulars.
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Mount the shock sensor to the location you have chosen for it. It should be somewhere close to the main module, since you will be running wires from one to the other.
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Connect the wiring--the valet switch, the power wire, the starter wire, the LED status indicator, the door lock sensors, the alarm override switch and any other components your alarm has--to the electrical system of the car. Again, particulars vary by make and model, and you should consult a wiring diagram of your specific car before you install the wiring. Check each connection with a voltmeter to determine that it is safe.
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Check your work to make sure that all of the wiring is safely insulated and doesn't dangle anywhere where it might interfere with a driver or passenger.
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Reconnect the battery to the electrical system of the car. Test the features of your security system to make sure they are functioning correctly.
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Reinstall the panels or dashboard components that you removed earlier.
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Tips & Warnings
Specifics on how to install your security system will vary depending on what car you drive. Consult a trained mechanic or an authorized dealer of your make and model before you attempt to install an alarm.
Never mount security system pieces near the engine or under the hood. They are sensitive to heat and vibration, which the engine produces in copious amounts.
