[tirwin]

Suggest you try to figure out if it's factory or aftermarket. Most work by disabling the fuel pump circuit. The factory siren is located in the front belly pan.

The alarm schematic is in the back of the Bentley. I was recently inquiring about this and didn't have much luck getting my questions answered. I *think* the alarm brain can be found behind the blower motor cover in the trunk.

Maybe that info will get you started in the right direction...