An electrical relay is a small device that acts like a switch to control the flow of electricity. It helps to control and protect larger electrical systems by connecting or disconnecting circuits based on signals it receives. Full definition
It's quite possible that you have an electrical short or perhaps a stuck open or damaged electrical relay that is activating the wiper when the brake pedal is pressed. (yourmechanic.com)
Typically when lights are not as bright as they should be, it's caused by a main electrical relay that is faulty and needs to be replaced. (yourmechanic.com)
Designed many systems including quartz altitude heating system, multiple vacuum control systems and electrical relay control systems. (jobhero.com)