^8) Hi Darrell , I would be happy with £15 if I can dig out a good one. I am down to a choice of two as the one I dug out yesterday is damaged at the electrical conection. Never tested one of these before outside of a car . I assume that if I leave one out over night to get some nice frost on it then whack 12 volts through it that should be a good test. will keep you informed. What is that trailer thing about, you are not doing one of those "half a 126" jobs are you ?