Slide the back pieces forward along the seat pieces so that the ends of the back pieces overhang the seat pieces by approximately 6½" (163mm).
For further visual reference see the 'Step 6 drawing' at the bottom of the previous page.
Align the coupler holes with the back piece lower holes, and thread wire through them.
And that's all the wire in place.
Four lengths in all.
At this stage everything is fairly loose.
All the wire is longer than required and will be cut off in due course.
Coming along marvelously.
Give the top a bit of a squeeze in.
This is really the interesting part because you will now get to see how the chair unfolds.
Simply grab the wire at each end of the chair top and lift the unit up so it's upright and on its legs.