How to Install a Car Alarm in a Chevy Impala
The Chevy Impala has been in and out of the Chevy lineup for generations but the basic alarm installation remains the same. Early Chevy Impala models are likely to have previously installed aftermarket electronics so extra care is required when installing a new alarm. Installing a car alarm requires considerable knowledge of car electrical systems and a wiring diagram.
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Instructions
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1
Read the alarm installation manual carefully and keep the support number handy if you have any questions as every alarm manufacturer uses different connection and mounting techniques. Open the hood and disconnect the positive battery cable. Connect the alarm power wire to the positive battery cable and run it to the driver side of the firewall.
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2
Locate an open area in the engine bay and mount the siren, facing the engine to limit water exposure while driving. Run the siren wires to the driver side's of the firewall and feed all of the wires through the firewall and into the dash area of the Impala. Drill a small hole in the firewall if necessary, directly in front of the steering wheel.
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3
Remove the lower dash panel if necessary and mount the shock sensor per the manufacturer's instructions. Locate the power lock relay if the car is so equipped and connect the alarm's power lock module.
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4
Find the starter wire in the ignition harness and attach the start disable relay. Drill a small hole in the dash for the LED light and snap it into place.
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5
Connect all of the wires to the alarm control module by plugging them into the module and secure it as far into the dash as possible with zip ties.
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6
Reconnect the positive battery and test the alarm on the Impala. Adjust the sensitivity level as desired and secure any loose wires with zip ties.
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Tips & Warnings
Exact wire locations vary in different generations of the Impala, check the wiring diagram carefully to ensure proper connections.
