Taking care of minor electrical issues in your home can often be done safely and successfully by yourself. Before you begin any repairs, always remember to switch off the power at the fuse box.
Some common wiring https://lh3.googleusercontent.com/p/AF1QipNkwqydSoIHr75OrUhuHBzYVF4CKH4OU7xmxzv6=s1360-w1360-h1020