The document provides instructions for wiring a basic lighthouse circuit using a switch, fuse, lights, cable, protoboard, battery, and relay. It explains that the negative pole of the switch should be connected to the negative side of the protoboard and the positive pole connected to the relay. It also notes that the negative terminal of the 12V battery goes to the negative side of the protoboard, while the positive terminal connects to a 30A fuse and then to the relay.