vectra n/s sidelight fault

98 1.8l 5dr hatch ...n/s sidelight will not light.headlight/main beam o.k.. bulb checked o.k...fuse checked o.k... headlight leveling working bothsides o.k...these work off of same fuse as sidelights. removed wire from bulb and no 12v seen on connector when light switch on(other lamp o.k.) anyone have a similar problem?.. does it route via a relay? any suggestions greatly appreciated.... thanks jj