Locking apparatus for trailer doors

A method of locking the doors of a trailer, wherein the doors include at least two securing rods for securing the doors to a frame of the trailer, the securing rods each including at least one cam pin attached near an end thereof and the frame including at least one cam pin housing for cooperation with the at least one cam pin, the method comprising:

• providing a locking apparatus, wherein the locking apparatus includes a first tubular member, a second tubular member structured and arranged to be received within the first tubular member, and wherein the first and second tubular members each include an L-shaped assembly comprising a base plate and a retaining plate extending generally outward from the base plate for engaging the cam pins to substantially prevent movement of the securing rods;
• placing the first and second tubular members between the at least two securing rods in a substantially perpendicular position with respect to the at least two securing rods;
• slidably positioning the second tubular member within the first tubular member so that each retaining plate substantially fills a gap between the cam pin and a wall of the cam pin housing, thereby preventing the cam pin from being removed from the cam pin housing;
• and
• securing the second tubular member within the first tubular member in a substantially locked position.