Abstract: A compact power lock is provided for use in a pickup truck tailgate with a key lockable latch that relies on a lock lever for its operation. The power lock includes a linear power actuator attached to a sliding actuating link with two tabs that engage the lock lever of the key lockable tailgate latch. The actuating link is arranged alongside the linear power actuator so as not to add to its length and to attain maximum compactness. The spacing of the two tabs is such that the lock lever can move freely between the locked and unlocked position when it is activated by the key lockable tailgate latch. When the actuator is energized by voltage pulses of alternating polarity its motion is transferred to the attached actuating link and the tabs push the locking lever to or fro to lock or unlock the tail gate.

Abstract: A tamperproof power lock is provided for use in a pickup truck tailgate latch handle. The lock includes a power actuator, a rotating crank, a connecting rod and a lock bolt that locks the tailgate handle. The linear output motion of the actuator is transferred into rotation of the crank that is limited to rotate between two stops. An over center spring or friction keeps the crank or the lock bolt in either of the two stop positions. The rotation of the crank is transferred into linear motion of the locking bolt by the connecting rod. In the locked position the crank is up against one of the stops and the connecting rod past dead center. As a result the locking bolt cannot be pushed back forcibly in an attempt to defeat the lock.