The Unlimited tailgate security enclosure is a simple, hinged design that creates a lockable storage area completely protected on all sides. The patented design works in conjunction with the lockable vehicle tailgate and the existing vehicle geometry to secure the area created without the need for a rigid front panel connection, any releasable lock mechanisms or other unnecessary hardware. The assembly top does not open like Tuffy deck enclosure part number 173 and is outfitted with tie-down anchors. It works in the unlimited 4-door model with the rear seat. Quickly and easily installs with standard hand tools in the 4 door Jeep models with an OEM hardtop or softtop. It will work in vehicles equipped with or without the subwoofer and functions with the OEM storage cover or the Tuffy Cubby Cover, part number 143. Assembly can be easily removed for transporting larger items. On vehicles with power door locks, arming the security alarm automatically disables the power door lock switches and ensures the tailgate and Tuffy enclosure are secure, even on softtop models or with the top removed.