Thanks wpoll. Yeah the lights worked fine until a few weeks ago and suddenly went very dull. I changed the bulbs and are still the same. Even the main beam lights don't seem as bright as they should be which would make sense if it has a grounded earth. I have checked the output at both headlights with a multi meter and the readings were Drivers dip beam 12'19 - 12'23 pass side dip beam 12'26 - 12'32. Not sure if this is a little low or not? Could the alternator be a factor?