Hi can't believe I have stumbled onto a post with exact same problem as me, I have just purchased a passenger side inner door card (3door) similar to this one....

http://www.ebay.co.uk/itm/FORD-FIEST...6#ht_572wt_689

I fitted it and to my total disappointment it doesn't work, the speaker does and the electric window switch does illuminate but the motor won't function..... Did you manage to get yours to work? If so could you tell me how you managed it? Any help or advise would be greatly recieved
Cheers.