Lock Replacement Step 1: Cut insulation behind lock mechanism. Step 2: After insulation is cut, the nut behind the lock will be revealed. Next you want to remove the nut be screwing in a counter-clockwise direction Step 3: Damaged lock is now removed. Insert new lock through Front. Step 4: Begin tightening nut behind the new lock, its easier to start with your fingers, then completely tighten with plyers or wrench. Step 5: Now that new lock is secure, place Chrome tape over the hole that you cut to remove lock. If there are any issues with new lock, Please contact: Tech support @ 866-599-0214