Heated Bed wire holder for Reprap heated bed

I have had three prints ruined because one of the wires to my heated bed broke because of metal fatigue where the copper wires are soldered to the PCB heater bed. On my printer, the wires just dangle. As the printer moves in the Y direction, the wires bend and bend and eventually break. I thought of this general designa few weeks ago but I had taped the wires into a bundle and had thought that would fix it. Yesterday one of the wires broke anyway and a pokeball peeled up on one side.

So I