Here's what you need to know:
* Brake light switch on the master cylinder: The brake light switch on the master cylinder is usually a mechanical switch that is actuated when the brake pedal is depressed. When the brake pedal is pushed, the brake fluid pressure in the master cylinder increases, causing the switch to activate and send a signal to the brake lights.
* Brake light switch on the pedal: The brake light switch on the pedal is often an electrical switch that is activated when the brake pedal is depressed. When the brake pedal is pushed, it physically presses against the switch and closes the circuit, allowing electricity to flow to the brake lights.
In some cases, having two brake light switches on a vehicle may be redundant and unnecessary, but in other cases, it may be done for safety reasons. For example, having two separate brake light switches can provide a backup in case one of the switches fails, ensuring that the brake lights will still function even if one switch malfunctions.
Having two separate brake light switches on a vehicle is generally not a major issue, and should not affect the performance or safety of the vehicle.
