What is an acc switch?

ACC stands for "Accessory." The ACC switch is a switch in a car that controls the power supply to the car's accessories, such as the radio, power windows, and lights. When the ACC switch is turned on, these accessories will receive power and can be used. When the ACC switch is turned off, the accessories will lose power and will not be able to be used. The ACC switch is typically located on the dashboard of a car, near the ignition switch.