I had this problem old my old s2, the fuse boxes are crap and mine melted where the white relays go, have a look where the relays fit on the panel makesure all connections and terminals are free from the green corrosion stuff and that its all clean and dry, i just fitted my own relay so i just did away with the ford ones and ran all wires through one relay tucked under the dash. If you took your car to an auto electritian he should only charge you an hours labour to fit, just check everything yourself like fuses, relays, and connections that way it might not cost you as much