Lighting transformers are used in various applications, and their wiring diagram can show how the motor transformer actually works. Essentially, motor lighting transformer wiring diagrams illustrate how the voltage across a line can be varied. They can be used for any number of applications where the voltage does have to be changed a bit to accommodate various devices. It should be noted here that a motor lighting transformer wiring diagram is a simple visual representation of the physical connections and physical layout of an electrical system or circuit. To read a wiring diagram, one should know different symbols used, such as the main symbols, lines, and the various connections. As shown in the motor lighting transformer wiring diagram, the elements used include power supply, ground, wire and connection, switches, output devices, logic gate, light, and resistors.