Abstract: An automobile alarm device, for an automobile of the type having an ornament mounted on a front part of the vehicle, such ornament incorporating a spring loaded mount, and the alarm device having a bracket attachable to the ornament, side portions extending from the bracket along at least one side of the ornament, a spring-loaded resilient arm member extending from the bracket transversely across the axis of the hood ornament, and being connected to the hood ornament so that movement of the hood ornament causes the arm to be deflected, and, electrical contacts positioned on the bracket and adapted to be contacted by the arm upon such deflection, the electrical contacts being connected to a source of electrical power, and to an alarm device, so as to activate the alarm.