open decklid , look under neath where the lock is ..theres a clip riveted on ...drill the rivet , pull the clip down , pull out the lock cylinder and arm , attach the arm to the new cylinder slide it in and replace the clip , you can rivet or just find a small screw and screw it in
now if you decklid is locked you can get in from the rear seat but its not fun
, i dont remove the latch as stephan detailed , without remote deck release theres a tab that just needs to be flipped to get at the release pawl flip the pawl just as a power latch does , and the lock will open
or if you're replacing the locks a cordless drill from outside works good, dont try to remove the cylinder with the drill just drill enough to unlock