How to Install a Vehicle Security System or Car Alarm


There are car alarms that a car owner can install personally or enlist the services of a mechanic. Most of the car alarms that are installed without the assistance of a mechanic are usually simple devices, which generally provide inadequate security. If you prefer to avoid the personal installation of the alarm, you can search for an automobile alarm and let a security company do the job.

Installation entails mounting of the siren onto a metal surface that is solid beneath the hood. The siren horn is then pointed towards the ground to avoid moisture collecting inside it. A hole is then drilled through the grommet, which is made of rubber in the car’s firewall and the siren’s wire is fed through this opening into the car’s passenger section. The alarm’s power wire is directly connected to the car battery and the wire fed into the car’s passenger compartment through the rubber grommet located on the firewall.

A fuse is then put on the power wire beside the battery, and a confirmation of the fuse size hereby warrants checking of the installation manual. Following the manual description helps in mounting the shock antenna. A hole is then drilled on the dash depending on where the status indicator should be placed. What follows is feeding the LED’s wire to pass through the hole, placing the mounting tape, which is double sided onto the LED’s back, and placing it on the dash over the hole.

Location of the wires, which operate the powered door locks of the car, should be the next step. The door-lock transmission is then connected to the bolt and unlocks wires while the alarm system wire is connected to the transmission according to the manner that the technician has described. Following the advice given by the technician, it should first be determined if the alarm has current sensing then a location of the wire, which works the light, should follow. At this point, one should connect the sensing line coming from the alarm system onto the light wire. In case the alarm lacks voltage or current sensing, a location of the door triggers is advisable and when it is found, it should be connected to the system.

Usually located on the navigation column, there is a starter wire, which is usually a few inches under the starter control. A connection of the starter disable transmission should then follow, after cutting the line. The starter immobilizing wire is then connected to the relay from the alarm. The next step is to choose a position somewhere under the dash to place the valet button. A connection of all wires to the correct outputs and inputs of the alarm module should then proceed. Using a drill, screws and screw bits, locate a strong surface below the dash where the module should be mounted. Tie wraps are adequate in securing the harness wires, which should be stuffed back under the dashboard. The alarm is now ready to be armed and its performance tested.

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