We are having an issue with the driver's radiator fan staying on. Fiat won't repair--too old. Took to independent garage and they tried to get wiring diagram but Fiat won't provide. So we desperately need workshop manual so that we can get this and other issues that come up, repaired. Tried all kinds of threads on forum and internet searches but nothing. We will be in GB in 2 weeks if anyone knows of a garage that works on older Fiat campers. Help please!