fuse box and relays?

i have a 1997 vw sharan, trying to find rear wiper relay, while looking in my drivers manual at the list of fuse's and the fuse box cover they do not match the fuse box layout, e.g. number 9 reads "rear heater" but there is no fuse in there but my heater works, have other fuses missing in box but everything it lists are working, has anyone got the layout of the fusebox and is it the same as the galaxy & alhambre, as i know they are built by the same company, and are nearly identical in most respects. and where are the relays, and which one for rear wiper. cheers for any help given.