The 85 Factory Service Update I put on Dropbox has a factory door lock diagram as well as pictures and advice on how to service the mechanisms. This booklet is about 55 pages of info put out to tell the factory service techs how to deal with all the changes made for 85. If you have an 85 through 89 you really ought to download it. Sorry it's two files instead of one-my scanner glitched halfway through.
Go here
http://forums.pelicanparts.com/porsche-911-technical-forum/881183-1985-service-update-911-models.html