1) check fuses are 'both' ok firstly
2) if you have H1 twin lamps (gti) then disconnect the yellow wire to the resistor that's hidden in the inner wing NS (behind battery)
could be more but those 2 are usual and easiest
2) if you have H1 twin lamps (gti) then disconnect the yellow wire to the resistor that's hidden in the inner wing NS (behind battery)
could be more but those 2 are usual and easiest