You'll notice there are three clips here. First one shows the LifeTrack hooked to a generator which is powering an air compressor and the plasma cutter. The first problem we ran into was forgetting to turn the pressure hose on the compressor on. The plasma torch won't turn on until it has air coming into it. The second problem was a bad parallel port cable running to the optoisolated solid state relay that connected from the PC to the plasma torch. You might also notice the long thin off white cable coming out of the plasma cutter. Thats the pc interface, its a re purposed phone cord.