Abstract: A security system for protecting a vehicle and its contents including a protective cover having conductors threaded through a hollow seam and electrically connected to a two member electrical connector. Each conductor is connected to a sensing circuit configured to detect an open circuit condition in the conductor-connector loop. In use, the loop is pulled taut around the protected vehicle and secured by a tensioning system while the electrical connector is held together by a temporary restraint system. The loop tension is adjusted and the temporary restraint is released subjecting the connector to the adjusted tension in the conductor. In this state, the security system is ready to detect movement of the protective cover or an open circuit condition.