I have a 2008 Ford Mondeo Petrol. I changed the headlamp bulbs yesterday and they worked fine with engine turned off. Today they only work when the engine is turned on. Can't understand why. Any advice please. I have my NCT today and not sure if this will be cause for failing. Thanks

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.