This is Smiths Classic electric fuel level gauge that is truly designed with simple appearance to create old-time-classic look on car interior. This electric fuel level gauge comes in 52mm diameter body with black bezel and requires voltage stabilizer on its installation. This product requires additional Smiths fuel sender to create optimal performance during the application. Classic Gauges are available with Chrome or Black bezels and ready to create interesting classic look on your car interior. Here is the wiring diagram of Smiths classic fuel gauge that consists of ignition switch, distributor, coil, fuse, ammeter, battery, capacitor, press sensor, oil press, tank sender, temperature sender, oil temperature, water temperature, fuel level, lighting switch, voltage regulator, typical instrument gauge, etc.