Headlights Opel Corsa C 00-06 ********VERY IMPORTANT******** ****Please advise the make of the load corrector *** The lighting from our products increases vision at least 30% compared with the original equipment lights. The efficiency of a round optic is and always will be better than an Original Equipment optic that needs to follow the curve of a car BUT the full effect of a twin head lamp conversion comes when you are driving in full beam, you take the day into the night.