Cheers Gareth, that's 3 UK cars checked out, all with the same results - a 3 way switch that only works in 1 position. Saves me digging around for wiring diagrams trying to find a fault that doesn't exist.

Thanks for explaining how the switch came to be used. This day and age they would have spent millions of pounds designing a new switch instead of using up existing stocks. They would also spend a fortune in throwing the old ones out as well.

Once again
Many thanks for your help and assistance.