Let's start at the key switch, on the back of the switch the terminals should be labeled. B= battery. This provides the power. You should have a wire coming from the large terminal on the solenoid which is connected to the + terminal of the battery. S= start. This wire will end up at the small terminal on the solenoid. It will probably go though the safety switches before getting to the solenoid. M= magneto. This wire will end up connected to the kill wire on the coil. This is to stop the engine. G= ground should be easy. L= lights. Start with these.