Let’s take the left half of the set first:
Take the wire from the coil and wrap the bare end around Nail A in the corner. This is Connection No. i.
Take another wire and put a bare end underneath the thumbtack that holds the razor blade. Push the tack down as hard as you can so that the bare wire is against the blade. Then take the other end of this wire and wrap it around Nail A. This is Connection No. 2.
Now the right half of the set. It looks like this:
Take the wire from the right end of the coil and wrap it around Nail В in the corner. That is Connection No. 3.
Wrap another wire around the Nail B. Take the other end of this wire and wrap it around one of the metal tips on the cord of the earphones. This is Connection No. 4.
Take another wire and wrap it around the other metal tip of the earphone cord. Now take the other end of this wire and put it under the head of the nail that holds the safety pin. With your hammer then pound this nail in so that the pin will stand up. Don’t nail it so tightly that the pin cannot move a little. This is Connection No. 5.
Our set is finished! But to make it work there are still two more things we must do.