2 Wire Proximity Sensor Wiring Diagram | Free Wiring Diagram Collection of 2 wire proximity sensor wiring diagram. A wiring diagram is a streamlined standard photographic depiction of an electrical circuit. It shows the components of the circuit as streamlined shapes, and also the power as well as signal connections in between the devices. 2 Wire Proximity Switch Wiring Diagram | autocardesign Jul 14, 20192 Wire Proximity Switch Wiring Diagram– wiring diagram is a simplified standard pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the capacity and signal friends amid the devices.