To install power locks, remove the interior door cover, and mount the power lock rod to the original lock rod or the actuator. Push the lock down manually to ensure both rods are in the down position, mount the power actuator into place, and connect the wire harness.
After connecting the wire harness to the actuator, secure it with ties to the door frame, and test the locking mechanism several times to ensure it works properly. Place the rocker switch in an area where it isn't obstructed, and replace the interior door cover. Refer to the instruction manual for specific installation instructions, as the instructions vary by brand.