a locking assembly for a truck bed closure includes an internal frame mounting a slider having a vertical portion with a dog - receiving aperture , a disk rotation flange , a manual actuation flange and a motor - actuator flange , and a horizontal portion with a pair of keyhole apertures for receiving the mounting studs . a hollow lock cylinder bushing secured to the mounting plate internally and rotatably receives a shaft and a lock tumbler . rotation of the shaft by turning an exterior handle unlatches the truck bed closure . the interior end of the tumbler mounts a locking dog . pivoting of the lock tumbler rotates the locking dog to shift the slider between the locked and unlocked positions . a lock disk fixed to the shaft engages the slider in the locked position , preventing unlatching . an electric actuator can be connected to the slider , enabling shifting of the slider from a wired or wireless remote switch .