Step 5: Wiring
Make sure you test it out before you fix anything in place.
I haven't yet wired the tone pot, as I'm missing a bit (not sure what that is yet - any ideas?)
Once the wiring is done, you can fix the bridge and pickup in place.
The pickup will need to be placed diagonally, but as long as your strings are positioned so they'll cross evenly between two of the magnets, this won't really be a problem. This project is more about creating a fun instrument from a forgotten object, rather than making a serious instrument with perfect tone and playability.
When fixing the bridge, insert screws through the bottom of the case, and the sides, to ensure the pressure of the strings doesn't create any movement.
Fix the nut in at the other end. Try to place the bridge and the nut as far away from each other as possible, to allow for the greatest possible range in pitch.