00' Ford Focus Central Locking Problem

DIYMart

During the cold weather my Central Locking failed. Found that the fuse had blown but when I replaced it, it blew again.
Research on the Net said to individually disconnect each door to find out which one is causing the fuse to blow. (The driver door was the usual culprit )
Disconnected the driver door lock and put in a new fuse. The passanger door mechanism was now working. Connected the driver door and now both front doors were locking/unlocking using either door.
Decided to go to the garage and get a few more spare fuses in case they blew again. When I got back home, the rear left door was now locking/unlocking with the two front doors!!
The only door that is'nt working is the rear right door. I disconnected the lock and connected it up again to see if it helped but no good.
I'm better off now than I was when I started with three doors working but its strange that one door is'nt working.
Is there a module that all the doors go through and if so where is it?? Would appreciate a little help. Thanks.

Hal1

Read this: http://www.focusfanatics.com/forum/showthread.php?t=133249

Short in drivers door latch.

DIYMart

Thanks for the Link Hal1, it really helped. Tried the central locking today and it worked intermittiently on the drivers door. There was a slight delay on it working at times.
Worked fine on passengers door. ( Rear right door still not working though ) Will try and take out the Latch tomo. Hopefully its easy to take out and take apart.

Hal1

If you have done as per the thread solution, I would replace the window seal as that's the source where the water ingress is.