Just an update on this thread today I wired up the heated rear window then tried to push the front fog relay in. It wouldn't catch right so swapped relays around and the same thing happened so it seems that mg rover in their tightness campaign didn't put the backs on the fuse box for some model cars so now I will have to just get my own loom sorted out taking a feed from the ignition or similar and wire the relay up using spade connectors (oh balljoints!)
Next job is..... Some simple leccy jobs to get the coolant alarm sorted this entails a piggyback spade connector and a earth ring connector that's it for now folks