the '93 cougar can swap parts with any cougar between '89 and '96. Since you have a '93, I'm guessing it's an XR-7 (performance) model, so try to find other XR-7's. You can also interchange parts with the Ford Thunderbird of the same model years.
A 2002 Mercury Cougar 2.5 liter plug wire diagram can be purchased from your local Mercury Cougar. It can also be found at most auto parts stores.
Call your local parts store.
try an auto parts salvage yard
Possibly. I have a 1995 Cougar with the 4.8L V8 and have used various parts from a 96 Thunderbird. My understanding is that, at least from 94 to 97 the 4.8l v8 engines are the same for the cougar, t-bird, mustang, Lincoln mark VII... You can find a usergroup online for cougars and thunderbirds, they have alot of info!
You can find the air conditioner schematic for the 2000 Mercury Cougar online at places like Parts Train. You can also find this schematic in the Chilton's repair manual for the vehicle.
You can find a front door latch assembly diagram, for your 1996, Mercury Cougar from the manufacturer website. Many auto-parts websites will have the diagram.
On a 1997 Mercury Cougar XR7, the temperature sensor is located below the air intake. The sensor should be accessible without having to remove any other parts.
The Haynes Repair Manuals would have a diagram of the serpentine belt on a 94 Mercury Cougar XR7. You can find the manual at your local library, book store, or most auto parts stores.
1994 Ford Thunderbird 3.8L V6
yes 99-02 body parts are all interchangeable.
chilton manuals at parts store
A Haynes manual available at most auto parts stores or you can check your local library.