hi, it connects by splicing into the headunit output wires located in each side of the car under the door sill.
the subs are fitted into the box where the 6.5 mids used to be, no need to send me yours back as they can be re fitted no problem.
yes will fit fine in a coupe
any other questions please ask,
Amr85amr - it doesnt let me send you a pm, if you like put your email address up here and ill send you my number, or if you can pm me and ill reply with the info