If you're going to open up the panel, think bigger than one round of laundry. That is doing a lot of work every time, that apart the spite factor isn't going t

If you're going to open up the panel, think bigger than one round of laundry. That is doing a lot of work every time, that apart the spite factor isn't going to be worth your time. Rather, you can install a reed switch (or these days perhaps something like an ESP32) between the appropriate wires, and tape it to the back of the panel. Then put the whole thing back together, and you can use the machines for free any time by swiping a magnet over the appropriate place.