Hello, I bought an Opel Zafira 2.0dt from 2000, the car fires beautifully, the temperature holds, only a problem because when I overtake, the car light comes on with the key and then it dies, I had a disela before, but I can't judge if the light comes on, it loses power more than once you have to wait for a while until the turbine turns on. I also have a problem, the reverse is not working, and the backlight of the bulb and fuses are replaced, what could be the cause?