In the picture provided by teqboy, the arrow is pointing to the plug on the end of the module. My alarm started going off for no reason and unplugging the module disabled the alarm without affecting the door locks or anything else.

Just unplug the connector and tuck it aside making sure that nothing can accidentally touch the pins and cause a short. My mechanic pulled it off for me while I watched. I don't recall any latches, or tricks to pulling the connector off the module.

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02 S500
92 500SL
92 400E (Sold)
87 300E (Sold)
83 300D Turbo (Sold)
75 300D (Sold)
74 240D (Sold after 20 years)