hi every one just need some help here,i was drive a long and me light went out on me,on the beam, side light still on sound went out and hearter stop too and window wipers too.look at fuse and all ok,athe back off fuse box i cross two wires and the window wipers work and hearter and sound but no beam light,got RAC out but he was no good

he think it could be fusebox as i have had some water come in the van could got in fusebox i just at lost end any

what i should try or look for thank