How come my gillera runner 2005 only have light in 1 of the 2 frontlamps?I can shift from hig and low beam, but there is always only light in one of the lamps. If i ex use the low light there is light in right lamp, and with the high beam there is only light in the left lamp... why is there not light in bought lamps at the same time f.example like a car? so bought lamps its at use at the same time with low light in bought lamps, and high light in bought lamps? Can anything be done so its possible?