Low beam headlight working on one side only
i own a bmw 1986 325e and i have a problem with my low beams. When i turn on my high beams all four lights will turn on, but when i turn on my low beams only the right side works. I replaced the light and it still didnt work. I even switched the lights to see if it was the light i bought but it still didnt work. Can anyone please tell me how to fix this.