Where is the automatic headlight sensor located on the Regal?

[McBrianna]

The automatic headlight sensor on the Regal is generally installed near the controlled object. Introduction to the oxygen sensor: The oxygen sensor is used to detect the concentration of oxygen in the exhaust and sends feedback signals to the ECU. The ECU then controls the increase or decrease in the fuel injector's fuel injection volume, thereby maintaining the air-fuel ratio of the mixture near the theoretical value. Function of the oxygen sensor: The sensor's role is to measure the oxygen content in the engine's exhaust after combustion, determining whether there is an excess of oxygen. It converts the oxygen content into a voltage signal and transmits it to the engine computer, enabling the engine to achieve closed-loop control based on the excess air factor. This ensures that the three-way catalytic converter achieves maximum conversion efficiency for the three pollutants in the exhaust: hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOX), thereby maximizing the conversion and purification of emission pollutants.