Where can i find a wiring diagram for a 1989 mercury marquis

Question

i need to find the diagnostic wires to plug in a code scanner but cant find the wires or plug

Answer 1

call dealer. but i do not think it has one.

Answer 2

www.autozone.com  

Answer 3

   Your best bet is to get the Haynes book on your model, and go to the trouble code section . Its the best $20.00 you'll spend. Not only will it tell you were the plug is, it will tell you how to retreive codes without a scanner and give you a code page to decifer them.Plus answers to any question you have about your car. Yep the best $20.00 you'll ever spend.