Abstract: This invention relates to a storage container (26) having a security system for mounting within a bed (22) of a vehicle (20). The security system my be operated by a vehicle battery (34) and include an alarm system utilizing the safety equipment of the vehicle such as a horn (36) and a parking light (38). The container includes a lower portion (30) and an upper portion (28) containing a security system (64). Lower portion 30 includes a pair of spaced end walls (42) connected together by a pair of side walls (43). The security system includes an alarm including plunger switches (66, 68) connected to an alarm control module (70), a key operated entry lock (76) and a remotely operated solenoid lock release (78). Unless disarmed, the alarm becomes activated whenever the lid of the storage container is opened.