Using the Klein 69411 circuit breaker accessory kit is easy. First, make sure your circuit breaker finder is the ET300 or ET310 model as this kit is designed for them. If you're working with a light fixture, connect the standard outlet two - prong female to light - fixture adapter to the fixture. Then use your circuit breaker finder to identify the correct breaker. When dealing with bare wires, attach the alligator - clips adapter to the wire and proceed in the same way. As for maintenance, keep the kit in a dry place. After each use, check the adapters for any signs of damage. If you notice any wear and tear, it's best to replace the adapter. Always follow basic electrical safety rules when using this kit, like turning off the power before making any connections.