When I fitted puddle / warning lights in my rear doors, my door controller didn't support them. So I ended up taking the rear door skins off so I could wire them into the lock. Before I put the outer skin back I set the lock with the spring in diagram, the purpose is to put tension on the grab handle. So once the outer grab handle is pulled the spring slides of catch and providing it has been refitted properly the grab handle will spring back after it is pulled
what information are you after, how to get the skin off?