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Miscellaneous Automotive
Car Electronics & Appearance
Alarm issues
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<blockquote data-quote="PRO2" data-source="post: 5944495" data-attributes="member: 610576"><p>These symptoms are likely the cause of a power or ground issue.</p><p></p><p>If you have a meter, connect its power and ground terminals directly to the component you are testing ie. the alarm brain or siren . . . watch the volt reading while you are operating the alarm. You should not see more than a 1/2 volt drop, if you do you have found the problem.</p><p></p><p>If you don't have a meter, connect all of the grounds together and run a temporary wire out to the battery. If this solves the problem, move the ground to a solid location in the car. If not, do the same with the 12 V+ leads.</p><p></p><p>The only other component that may cause this kind of grief is a data interface, disconnect it and test the alarm.</p><p></p><p>Best of luck.</p></blockquote><p></p>
[QUOTE="PRO2, post: 5944495, member: 610576"] These symptoms are likely the cause of a power or ground issue. If you have a meter, connect its power and ground terminals directly to the component you are testing ie. the alarm brain or siren . . . watch the volt reading while you are operating the alarm. You should not see more than a 1/2 volt drop, if you do you have found the problem. If you don't have a meter, connect all of the grounds together and run a temporary wire out to the battery. If this solves the problem, move the ground to a solid location in the car. If not, do the same with the 12 V+ leads. The only other component that may cause this kind of grief is a data interface, disconnect it and test the alarm. Best of luck. [/QUOTE]
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