I have a mtd yard machine that has a 18 hp brigs. This machine will only start and run buy shorting the 2 post on the solenoid, and the key on when you shut the key off it turns off.? The motor has been removed and put on another mower today and I have the same problem different solenoid, starting switch there are no safety switches on the new machine. I need to know what wires and in what position they go too on the starter switch.. it's getting dark please help...