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How to Install a Siren Alarm on a Mercedes C-Class W203

Model: Mercedes Classe C W203 - Years: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007

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Video tutorial

In this short video, you will see how to install a small siren alarm on a Mercedes C-Class W203, third generation. First, connect the alarm system to the power supply; open the hood and connect the wires to the battery, as shown in the video.

Next, connect the alarm to the power outlet (in this case, it is connected via the cigarette lighter, converted to a USB port); then check the alarm's operation by making the necessary adjustments (volume and duration).


Updated on 15 April 2026 by ScegliAuto


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by ScegliAuto

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