A motorcycle has a frame, a structure mounted on the frame, and a locking assembly locks the structure on the frame and has a latch pin mounted on the frame, and a latch housing mounted on the structure and having a passage into which the latch pin extends. A latch lever is pivotably mounted in the housing for movement into a latching position in which it engages the latch pin to prevent its retraction from the latch housing, and a spring biases the latch lever into the latching position. A key lock is mounted on the exterior of the structure and including a rotatable shaft and an arm or cable connected thereto engages the latch lever to effect its pivoting against the biasing action of the biasing means to disengage the latch lever from the latch pin and permit the structure to be disengaged from the latch pin.