I have had this problem recently with my 2003 Windstar Sport. Just
the other day the #6 fuse had blown. This runs the radio, and the
power sliding doors plus the remote locking/unlocking controls.
I replaced the 15A #6 fuse and instantly it blew as soon as I inserted
it in. I decided to try again and disconnect the battery first. It
seemed to work, but as I was resetting the clock I heard a click and
it blew again.
If anyone has a solution or knows of why this may be happening, any
help will be appreciated.