Hi y'all,. I am trying to put a man overboard switch on my 59 Wizard 10 hp. I got the sea dog universal one. There are 4 prongs 2 for ignition, and 2 for magneto, which I what mine is. I ran two wires through the mag plate and attached to the points where the condenser wires attach. But the 2 magneto prongs are only common with each other when you pull off the cord. I don't see how it can ground them to the block, or the shroud because the switch body is plastic or nylon that doesn't conduct. All that happens is the 2 wires become common with each other, which they seem to be anyway when ohmed with a volt meter. the instructions suck with this switch. Can anyone shed some light?