Hello, can anyone help me? I have bought this Mig welder but I have a problem, the person I bought it from had bought a new amperage switch after the old one had broke. He had wired it up but it only worked on two settings, 2 and 3, I have looked at it and their was a grey wire off it loose and so I got in touch with a friend who does electrics and he said it appears that it is wired up wrong but not knowing about it he couldn't help. I got in touch with Einhell asking whether they had an electrical diagram for it but they replied and said that these are only at the factory and they can't help. Is their anyone on here who has one who could send me a picture of the wiring on the switch or what wires from where go to the different positions please? Any help will be appreciated. The person I bought it from has given me a paper diagram he did when changing the switch and also marked some wires but he has missed some out as their are more wires than he has marked and written down. He can't help any further and I bought as seen, I am up the creek without a paddle. Thanks. David2.