Need some help with a problem I have with main beam. Have a bog standard Stilo 1.4 petrol and have recently noticed (now its becoming darker) that my main headlight beam does not work (dip, side, spots and indicators are fine). Have checked the fuses, and have noticed the warning on the dash works, so don't think its the stalk. Think it might be a relay but don't know which is which, can anyone help?