Tell us what year you are looking for.
Which vacuum diagram The Underhood for the engine or the vacuum for the interior /AC system?
vacuum diagram for 1978 cordoba
You can find the wiring diagram for the 1993 mercury capri at the following site. This manual is very acurate for all the things pertaining to the 90's capri. www.techcapri.com This site has just about everything you need for this little car. Good luck.
You can get a vacuum diagram for a 1994 Mercury Cougar 4.6 liter in the Chilton's manual for that year and model. You can also find the diagram online at All Data DIY and at Engine Guy online.
http://www.cougarpartscatalog.com/1919mecovaac.html
A Haynes manual available at most auto parts stores or you can check your local library.
See below link-
You can find a free Ford F1 50 vacuum diagram at most Ford dealerships. Many auto-parts stores will have the vacuum diagram.
Modern Capri Parts. They sell replacement seat recovering kits!
You can find a vacuum diagram for your 1992 Chevy Lumina at most Chevrolet dealerships. Chevrolet service manuals will have the vacuum diagram and can be found at most local libraries.
Under hood diagram or autozone.com
You can find the 1986 Chevrolet vacuum line diagram at most Chevrolet dealerships. The vacuum line diagram can also be found at most auto-parts stores.