Breakers of a chain are used for protection of such components of system of onboard electric equipment as head headlights and electric motors of the drive of window regulators/cover of the top hatch / door locks, etc.
On some models after operation breakers revert to the original state automatically. If the overload causing shutdown of the breaker had not incidental character, it is necessary to check a condition of the corresponding contour immediately. After malfunction elimination the chain breaker enters the normal mode of functioning again. Sometimes return of the breaker to the working condition should be made manually after elimination of the reason of an overload.
For introduction of the breaker to the working condition disconnect a negative wire from the battery.
If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for input of the audio system in action!
Take the breaker, pass a thin core throughout specially provided opening in the case and push it in an opening before click. Then it makes sense to make sure conductivity by means of an ohmmeter available between plugs of the breaker and only after it to establish it into place.