hello MARK SPINKS
i am an astra owner my self the fuse box is under the stearivng wheel to the right were that little comparment is just bu the drivers door open that and you will se on each corner there are some little lock's you will nead a flat headed scrow driver there the little lock's whith the scrow driver tern them till it coumes lose its only a quarter tern do that on all locks then behind that is the fuse box there is a map on the plastc box(which you have taken off) hope thiss helps sam
sam
July 2009