The wires should be like this. The B will be a wire coming directly from the solenoid. It will be attached at the same side as the wire coming from the battery. The G is a ground wire. The L wire is for the lights. The S wire will go to the small terminal on the solenoid to energize it to send the current to the starter. The M is the magneto ground wire. It will need to connect directly to the small spade terminal on the ignition module to shut off the tractor.