You need to install the upper latch to the rear side access door and install the lower bolts retaining the upper latch to the rear side access door. Then you need to connect the upper latch rod to the latch and close the rear side access door to self-align the upper latch and tighten the lower rear side access door upper latch bolts. After that, you need to open the rear side access door, install the upper rear side access door upper latch bolt, and install the rear side access door trim panel. Finally, you need to close the rear side access door.