1. A snap cap black. 2. An orange connector with the rod through the hole in the middle. 3. A purple connector with one end of the string trapped underneath. 4. An orange connector with the rod through the hole in the middle. 5. Three silver spacers. 6. An orange connector end-on to the red rod. 7. A blue rod end-on to the orange connector, as shown.
Attach the handle to the four white rods on the righthand wall of the castle.
Next build the drawbridge
and attach it to the front castle wall as shown.
Finally, run the string over the blue rod above the handle, and through the gap beyond the white connector.
Then tie the other end of the string to the red connector on the end of the drawbridge as shown, and cut off any excess length of string.
Your castle is now complete, and you can raise the drawbridge by turning the handle.